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python字符類型的一些方法小結

2020-01-04 17:28:08
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下面小編就為大家帶來一篇python字符類型的一些方法小結。小編覺得挺不錯的,現在分享給大家,也給大家做個參考,一起跟隨小編過來看看吧
 

int 數字類型

class int(object):  """  int(x=0) -> int or long  int(x, base=10) -> int or long    Convert a number or string to an integer, or return 0 if no arguments  are given. If x is floating point, the conversion truncates towards zero.  If x is outside the integer range, the function returns a long instead.    If x is not a number or if base is given, then x must be a string or  Unicode object representing an integer literal in the given base. The  literal can be preceded by '+' or '-' and be surrounded by whitespace.  The base defaults to 10. Valid bases are 0 and 2-36. Base 0 means to  interpret the base from the string as an integer literal.  >>> int('0b100', base=0)  """  def bit_length(self):     """ 返回表示該數字的時占用的最少位數 """    """    int.bit_length() -> int        Number of bits necessary to represent self in binary.    >>> bin(37)    '0b100101'    >>> (37).bit_length()    """    return 0  def conjugate(self, *args, **kwargs): # real signature unknown    """ 返回該復數的共軛復數 """    """ Returns self, the complex conjugate of any int. """    pass  def __abs__(self):    """ 返回絕對值 """    """ x.__abs__() <==> abs(x) """    pass  def __add__(self, y):    """ x.__add__(y) <==> x+y """    pass  def __and__(self, y):    """ x.__and__(y) <==> x&y """    pass  def __cmp__(self, y):     """ 比較兩個數大小 """    """ x.__cmp__(y) <==> cmp(x,y) """    pass  def __coerce__(self, y):    """ 強制生成一個元組 """     """ x.__coerce__(y) <==> coerce(x, y) """    pass  def __divmod__(self, y):     """ 相除,得到商和余數組成的元組 """     """ x.__divmod__(y) <==> divmod(x, y) """    pass  def __div__(self, y):     """ x.__div__(y) <==> x/y """    pass  def __float__(self):     """ 轉換為浮點類型 """     """ x.__float__() <==> float(x) """    pass  def __floordiv__(self, y):     """ x.__floordiv__(y) <==> x//y """    pass  def __format__(self, *args, **kwargs): # real signature unknown    pass  def __getattribute__(self, name):     """ x.__getattribute__('name') <==> x.name """    pass  def __getnewargs__(self, *args, **kwargs): # real signature unknown    """ 內部調用 __new__方法或創建對象時傳入參數使用 """     pass  def __hash__(self):     """如果對象object為哈希表類型,返回對象object的哈希值。哈希值為整數。在字典查找中,哈希值用于快速比較字典的鍵。兩個數值如果相等,則哈希值也相等。"""    """ x.__hash__() <==> hash(x) """    pass  def __hex__(self):     """ 返回當前數的 十六進制 表示 """     """ x.__hex__() <==> hex(x) """    pass  def __index__(self):     """ 用于切片,數字無意義 """    """ x[y:z] <==> x[y.__index__():z.__index__()] """    pass  def __init__(self, x, base=10): # known special case of int.__init__    """ 構造方法,執行 x = 123 或 x = int(10) 時,自動調用,暫時忽略 """     """    int(x=0) -> int or long    int(x, base=10) -> int or long        Convert a number or string to an integer, or return 0 if no arguments    are given. If x is floating point, the conversion truncates towards zero.    If x is outside the integer range, the function returns a long instead.        If x is not a number or if base is given, then x must be a string or    Unicode object representing an integer literal in the given base. The    literal can be preceded by '+' or '-' and be surrounded by whitespace.    The base defaults to 10. Valid bases are 0 and 2-36. Base 0 means to    interpret the base from the string as an integer literal.    >>> int('0b100', base=0)    # (copied from class doc)    """    pass  def __int__(self):     """ 轉換為整數 """     """ x.__int__() <==> int(x) """    pass  def __invert__(self):     """ x.__invert__() <==> ~x """    pass  def __long__(self):     """ 轉換為長整數 """     """ x.__long__() <==> long(x) """    pass  def __lshift__(self, y):     """ x.__lshift__(y) <==> x<<y """    pass  def __mod__(self, y):     """ x.__mod__(y) <==> x%y """    pass  def __mul__(self, y):     """ x.__mul__(y) <==> x*y """    pass  def __neg__(self):     """ x.__neg__() <==> -x """    pass  @staticmethod # known case of __new__  def __new__(S, *more):     """ T.__new__(S, ...) -> a new object with type S, a subtype of T """    pass  def __nonzero__(self):     """ x.__nonzero__() <==> x != 0 """    pass  def __oct__(self):     """ 返回改值的 八進制 表示 """     """ x.__oct__() <==> oct(x) """    pass  def __or__(self, y):     """ x.__or__(y) <==> x|y """    pass  def __pos__(self):     """ x.__pos__() <==> +x """    pass  def __pow__(self, y, z=None):     """ 冪,次方 """     """ x.__pow__(y[, z]) <==> pow(x, y[, z]) """    pass  def __radd__(self, y):     """ x.__radd__(y) <==> y+x """    pass  def __rand__(self, y):     """ x.__rand__(y) <==> y&x """    pass  def __rdivmod__(self, y):     """ x.__rdivmod__(y) <==> divmod(y, x) """    pass  def __rdiv__(self, y):     """ x.__rdiv__(y) <==> y/x """    pass  def __repr__(self):     """轉化為解釋器可讀取的形式 """    """ x.__repr__() <==> repr(x) """    pass  def __str__(self):     """轉換為人閱讀的形式,如果沒有適于人閱讀的解釋形式的話,則返回解釋器課閱讀的形式"""    """ x.__str__() <==> str(x) """    pass  def __rfloordiv__(self, y):     """ x.__rfloordiv__(y) <==> y//x """    pass  def __rlshift__(self, y):     """ x.__rlshift__(y) <==> y<<x """    pass  def __rmod__(self, y):     """ x.__rmod__(y) <==> y%x """    pass  def __rmul__(self, y):     """ x.__rmul__(y) <==> y*x """    pass  def __ror__(self, y):     """ x.__ror__(y) <==> y|x """    pass  def __rpow__(self, x, z=None):     """ y.__rpow__(x[, z]) <==> pow(x, y[, z]) """    pass  def __rrshift__(self, y):     """ x.__rrshift__(y) <==> y>>x """    pass  def __rshift__(self, y):     """ x.__rshift__(y) <==> x>>y """    pass  def __rsub__(self, y):     """ x.__rsub__(y) <==> y-x """    pass  def __rtruediv__(self, y):     """ x.__rtruediv__(y) <==> y/x """    pass  def __rxor__(self, y):     """ x.__rxor__(y) <==> y^x """    pass  def __sub__(self, y):     """ x.__sub__(y) <==> x-y """    pass  def __truediv__(self, y):     """ x.__truediv__(y) <==> x/y """    pass  def __trunc__(self, *args, **kwargs):     """ 返回數值被截取為整形的值,在整形中無意義 """    pass  def __xor__(self, y):     """ x.__xor__(y) <==> x^y """    pass  denominator = property(lambda self: object(), lambda self, v: None, lambda self: None) # default  """ 分母 = 1 """  """the denominator of a rational number in lowest terms"""  imag = property(lambda self: object(), lambda self, v: None, lambda self: None) # default  """ 虛數,無意義 """  """the imaginary part of a complex number"""  numerator = property(lambda self: object(), lambda self, v: None, lambda self: None) # default  """ 分子 = 數字大小 """  """the numerator of a rational number in lowest terms"""  real = property(lambda self: object(), lambda self, v: None, lambda self: None) # default  """ 實屬,無意義 """  """the real part of a complex number"""int

str 字符串類型的一些方法

class str(basestring):  """  str(object='') -> string    Return a nice string representation of the object.  If the argument is a string, the return value is the same object.  """  def capitalize(self):     """ 首字母變大寫 """    """    S.capitalize() -> string        Return a copy of the string S with only its first character    capitalized.    """    return ""  def center(self, width, fillchar=None):     """ 內容居中,width:總長度;fillchar:空白處填充內容,默認無 """    """    S.center(width[, fillchar]) -> string        Return S centered in a string of length width. Padding is    done using the specified fill character (default is a space)    """    return ""  def count(self, sub, start=None, end=None):     """ 子序列個數 """    """    S.count(sub[, start[, end]]) -> int        Return the number of non-overlapping occurrences of substring sub in    string S[start:end]. Optional arguments start and end are interpreted    as in slice notation.    """    return 0  def decode(self, encoding=None, errors=None):     """ 解碼 """    """    S.decode([encoding[,errors]]) -> object        Decodes S using the codec registered for encoding. encoding defaults    to the default encoding. errors may be given to set a different error    handling scheme. Default is 'strict' meaning that encoding errors raise    a UnicodeDecodeError. Other possible values are 'ignore' and 'replace'    as well as any other name registered with codecs.register_error that is    able to handle UnicodeDecodeErrors.    """    return object()  def encode(self, encoding=None, errors=None):     """ 編碼,針對unicode """    """    S.encode([encoding[,errors]]) -> object        Encodes S using the codec registered for encoding. encoding defaults    to the default encoding. errors may be given to set a different error    handling scheme. Default is 'strict' meaning that encoding errors raise    a UnicodeEncodeError. Other possible values are 'ignore', 'replace' and    'xmlcharrefreplace' as well as any other name registered with    codecs.register_error that is able to handle UnicodeEncodeErrors.    """    return object()  def endswith(self, suffix, start=None, end=None):     """ 是否以 xxx 結束 """    """    S.endswith(suffix[, start[, end]]) -> bool        Return True if S ends with the specified suffix, False otherwise.    With optional start, test S beginning at that position.    With optional end, stop comparing S at that position.    suffix can also be a tuple of strings to try.    """    return False  def expandtabs(self, tabsize=None):     """ 將tab轉換成空格,默認一個tab轉換成8個空格 """    """    S.expandtabs([tabsize]) -> string        Return a copy of S where all tab characters are expanded using spaces.    If tabsize is not given, a tab size of 8 characters is assumed.    """    return ""  def find(self, sub, start=None, end=None):     """ 尋找子序列位置,如果沒找到,返回 -1 """    """    S.find(sub [,start [,end]]) -> int        Return the lowest index in S where substring sub is found,    such that sub is contained within S[start:end]. Optional    arguments start and end are interpreted as in slice notation.        Return -1 on failure.    """    return 0  def format(*args, **kwargs): # known special case of str.format    """ 字符串格式化,動態參數,將函數式編程時細說 """    """    S.format(*args, **kwargs) -> string        Return a formatted version of S, using substitutions from args and kwargs.    The substitutions are identified by braces ('{' and '}').    """    pass  def index(self, sub, start=None, end=None):     """ 子序列位置,如果沒找到,報錯 """    S.index(sub [,start [,end]]) -> int        Like S.find() but raise ValueError when the substring is not found.    """    return 0  def isalnum(self):     """ 是否是字母和數字 """    """    S.isalnum() -> bool        Return True if all characters in S are alphanumeric    and there is at least one character in S, False otherwise.    """    return False  def isalpha(self):     """ 是否是字母 """    """    S.isalpha() -> bool        Return True if all characters in S are alphabetic    and there is at least one character in S, False otherwise.    """    return False  def isdigit(self):     """ 是否是數字 """    """    S.isdigit() -> bool        Return True if all characters in S are digits    and there is at least one character in S, False otherwise.    """    return False  def islower(self):     """ 是否小寫 """    """    S.islower() -> bool        Return True if all cased characters in S are lowercase and there is    at least one cased character in S, False otherwise.    """    return False  def isspace(self):     """    S.isspace() -> bool        Return True if all characters in S are whitespace    and there is at least one character in S, False otherwise.    """    return False  def istitle(self):     """    S.istitle() -> bool        Return True if S is a titlecased string and there is at least one    character in S, i.e. uppercase characters may only follow uncased    characters and lowercase characters only cased ones. Return False    otherwise.    """    return False  def isupper(self):     """    S.isupper() -> bool        Return True if all cased characters in S are uppercase and there is    at least one cased character in S, False otherwise.    """    return False  def join(self, iterable):     """ 連接 """    """    S.join(iterable) -> string        Return a string which is the concatenation of the strings in the    iterable. The separator between elements is S.    """    return ""  def ljust(self, width, fillchar=None):     """ 內容左對齊,右側填充 """    """    S.ljust(width[, fillchar]) -> string        Return S left-justified in a string of length width. Padding is    done using the specified fill character (default is a space).    """    return ""  def lower(self):     """ 變小寫 """    """    S.lower() -> string        Return a copy of the string S converted to lowercase.    """    return ""  def lstrip(self, chars=None):     """ 移除左側空白 """    """    S.lstrip([chars]) -> string or unicode        Return a copy of the string S with leading whitespace removed.    If chars is given and not None, remove characters in chars instead.    If chars is unicode, S will be converted to unicode before stripping    """    return ""  def partition(self, sep):     """ 分割,前,中,后三部分 """    """    S.partition(sep) -> (head, sep, tail)        Search for the separator sep in S, and return the part before it,    the separator itself, and the part after it. If the separator is not    found, return S and two empty strings.    """    pass  def replace(self, old, new, count=None):     """ 替換 """    """    S.replace(old, new[, count]) -> string        Return a copy of string S with all occurrences of substring    old replaced by new. If the optional argument count is    given, only the first count occurrences are replaced.    """    return ""  def rfind(self, sub, start=None, end=None):     """    S.rfind(sub [,start [,end]]) -> int        Return the highest index in S where substring sub is found,    such that sub is contained within S[start:end]. Optional    arguments start and end are interpreted as in slice notation.        Return -1 on failure.    """    return 0  def rindex(self, sub, start=None, end=None):     """    S.rindex(sub [,start [,end]]) -> int        Like S.rfind() but raise ValueError when the substring is not found.    """    return 0  def rjust(self, width, fillchar=None):     """    S.rjust(width[, fillchar]) -> string        Return S right-justified in a string of length width. Padding is    done using the specified fill character (default is a space)    """    return ""  def rpartition(self, sep):     """    S.rpartition(sep) -> (head, sep, tail)        Search for the separator sep in S, starting at the end of S, and return    the part before it, the separator itself, and the part after it. If the    separator is not found, return two empty strings and S.    """    pass  def rsplit(self, sep=None, maxsplit=None):     """    S.rsplit([sep [,maxsplit]]) -> list of strings        Return a list of the words in the string S, using sep as the    delimiter string, starting at the end of the string and working    to the front. If maxsplit is given, at most maxsplit splits are    done. If sep is not specified or is None, any whitespace string    is a separator.    """    return []  def rstrip(self, chars=None):     """    S.rstrip([chars]) -> string or unicode        Return a copy of the string S with trailing whitespace removed.    If chars is given and not None, remove characters in chars instead.    If chars is unicode, S will be converted to unicode before stripping    """    return ""  def split(self, sep=None, maxsplit=None):     """ 分割, maxsplit最多分割幾次 """    """    S.split([sep [,maxsplit]]) -> list of strings        Return a list of the words in the string S, using sep as the    delimiter string. If maxsplit is given, at most maxsplit    splits are done. If sep is not specified or is None, any    whitespace string is a separator and empty strings are removed    from the result.    """    return []  def splitlines(self, keepends=False):     """ 根據換行分割 """    """    S.splitlines(keepends=False) -> list of strings        Return a list of the lines in S, breaking at line boundaries.    Line breaks are not included in the resulting list unless keepends    is given and true.    """    return []  def startswith(self, prefix, start=None, end=None):     """ 是否起始 """    """    S.startswith(prefix[, start[, end]]) -> bool        Return True if S starts with the specified prefix, False otherwise.    With optional start, test S beginning at that position.    With optional end, stop comparing S at that position.    prefix can also be a tuple of strings to try.    """    return False  def strip(self, chars=None):     """ 移除兩段空白 """    """    S.strip([chars]) -> string or unicode        Return a copy of the string S with leading and trailing    whitespace removed.    If chars is given and not None, remove characters in chars instead.    If chars is unicode, S will be converted to unicode before stripping    """    return ""  def swapcase(self):     """ 大寫變小寫,小寫變大寫 """    """    S.swapcase() -> string        Return a copy of the string S with uppercase characters    converted to lowercase and vice versa.    """    return ""  def title(self):     """    S.title() -> string        Return a titlecased version of S, i.e. words start with uppercase    characters, all remaining cased characters have lowercase.    """    return ""  def translate(self, table, deletechars=None):     """    轉換,需要先做一個對應表,最后一個表示刪除字符集合    intab = "aeiou"    outtab = "12345"    trantab = maketrans(intab, outtab)    str = "this is string example....wow!!!"    print str.translate(trantab, 'xm')    """    """    S.translate(table [,deletechars]) -> string        Return a copy of the string S, where all characters occurring    in the optional argument deletechars are removed, and the    remaining characters have been mapped through the given    translation table, which must be a string of length 256 or None.    If the table argument is None, no translation is applied and    the operation simply removes the characters in deletechars.    """    return ""  def upper(self):     """    S.upper() -> string        Return a copy of the string S converted to uppercase.    """    return ""  def zfill(self, width):     """方法返回指定長度的字符串,原字符串右對齊,前面填充0。"""    """    S.zfill(width) -> string        Pad a numeric string S with zeros on the left, to fill a field    of the specified width. The string S is never truncated.    """    return ""  def _formatter_field_name_split(self, *args, **kwargs): # real signature unknown    pass  def _formatter_parser(self, *args, **kwargs): # real signature unknown    pass  def __add__(self, y):     """ x.__add__(y) <==> x+y """    pass  def __contains__(self, y):     """ x.__contains__(y) <==> y in x """    pass  def __eq__(self, y):     """ x.__eq__(y) <==> x==y """    pass  def __format__(self, format_spec):     """    S.__format__(format_spec) -> string        Return a formatted version of S as described by format_spec.    """    return ""  def __getattribute__(self, name):     """ x.__getattribute__('name') <==> x.name """    pass  def __getitem__(self, y):     """ x.__getitem__(y) <==> x[y] """    pass  def __getnewargs__(self, *args, **kwargs): # real signature unknown    pass  def __getslice__(self, i, j):     """    x.__getslice__(i, j) <==> x[i:j]                    Use of negative indices is not supported.    """    pass  def __ge__(self, y):     """ x.__ge__(y) <==> x>=y """    pass  def __gt__(self, y):     """ x.__gt__(y) <==> x>y """    pass  def __hash__(self):     """ x.__hash__() <==> hash(x) """    pass  def __init__(self, string=''): # known special case of str.__init__    """    str(object='') -> string        Return a nice string representation of the object.    If the argument is a string, the return value is the same object.    # (copied from class doc)    """    pass  def __len__(self):     """ x.__len__() <==> len(x) """    pass  def __le__(self, y):     """ x.__le__(y) <==> x<=y """    pass  def __lt__(self, y):     """ x.__lt__(y) <==> x<y """    pass  def __mod__(self, y):     """ x.__mod__(y) <==> x%y """    pass  def __mul__(self, n):     """ x.__mul__(n) <==> x*n """    pass  @staticmethod # known case of __new__  def __new__(S, *more):     """ T.__new__(S, ...) -> a new object with type S, a subtype of T """    pass  def __ne__(self, y):     """ x.__ne__(y) <==> x!=y """    pass  def __repr__(self):     """ x.__repr__() <==> repr(x) """    pass  def __rmod__(self, y):     """ x.__rmod__(y) <==> y%x """    pass  def __rmul__(self, n):     """ x.__rmul__(n) <==> n*x """    pass  def __sizeof__(self):     """ S.__sizeof__() -> size of S in memory, in bytes """    pass  def __str__(self):     """ x.__str__() <==> str(x) """    passstr

LIST 列表類型

class list(object):  """  list() -> new empty list  list(iterable) -> new list initialized from iterable's items  """  def append(self, p_object): # real signature unknown; restored from __doc__    """ L.append(object) -- append object to end """    pass  def count(self, value): # real signature unknown; restored from __doc__    """ L.count(value) -> integer -- return number of occurrences of value """    return 0  def extend(self, iterable): # real signature unknown; restored from __doc__    """ L.extend(iterable) -- extend list by appending elements from the iterable """    pass  def index(self, value, start=None, stop=None): # real signature unknown; restored from __doc__    """    L.index(value, [start, [stop]]) -> integer -- return first index of value.    Raises ValueError if the value is not present.    """    return 0  def insert(self, index, p_object): # real signature unknown; restored from __doc__    """ L.insert(index, object) -- insert object before index """    pass  def pop(self, index=None): # real signature unknown; restored from __doc__    """    L.pop([index]) -> item -- remove and return item at index (default last).    Raises IndexError if list is empty or index is out of range.    """    pass  def remove(self, value): # real signature unknown; restored from __doc__    """    L.remove(value) -- remove first occurrence of value.    Raises ValueError if the value is not present.    """    pass  def reverse(self): # real signature unknown; restored from __doc__    """ L.reverse() -- reverse *IN PLACE* """    pass  def sort(self, cmp=None, key=None, reverse=False): # real signature unknown; restored from __doc__    """    L.sort(cmp=None, key=None, reverse=False) -- stable sort *IN PLACE*;    cmp(x, y) -> -1, 0, 1    """    pass  def __add__(self, y): # real signature unknown; restored from __doc__    """ x.__add__(y) <==> x+y """    pass  def __contains__(self, y): # real signature unknown; restored from __doc__    """ x.__contains__(y) <==> y in x """    pass  def __delitem__(self, y): # real signature unknown; restored from __doc__    """ x.__delitem__(y) <==> del x[y] """    pass  def __delslice__(self, i, j): # real signature unknown; restored from __doc__    """    x.__delslice__(i, j) <==> del x[i:j]                    Use of negative indices is not supported.    """    pass  def __eq__(self, y): # real signature unknown; restored from __doc__    """ x.__eq__(y) <==> x==y """    pass  def __getattribute__(self, name): # real signature unknown; restored from __doc__    """ x.__getattribute__('name') <==> x.name """    pass  def __getitem__(self, y): # real signature unknown; restored from __doc__    """ x.__getitem__(y) <==> x[y] """    pass  def __getslice__(self, i, j): # real signature unknown; restored from __doc__    """    x.__getslice__(i, j) <==> x[i:j]                    Use of negative indices is not supported.    """    pass  def __ge__(self, y): # real signature unknown; restored from __doc__    """ x.__ge__(y) <==> x>=y """    pass  def __gt__(self, y): # real signature unknown; restored from __doc__    """ x.__gt__(y) <==> x>y """    pass  def __iadd__(self, y): # real signature unknown; restored from __doc__    """ x.__iadd__(y) <==> x+=y """    pass  def __imul__(self, y): # real signature unknown; restored from __doc__    """ x.__imul__(y) <==> x*=y """    pass  def __init__(self, seq=()): # known special case of list.__init__    """    list() -> new empty list    list(iterable) -> new list initialized from iterable's items    # (copied from class doc)    """    pass  def __iter__(self): # real signature unknown; restored from __doc__    """ x.__iter__() <==> iter(x) """    pass  def __len__(self): # real signature unknown; restored from __doc__    """ x.__len__() <==> len(x) """    pass  def __le__(self, y): # real signature unknown; restored from __doc__    """ x.__le__(y) <==> x<=y """    pass  def __lt__(self, y): # real signature unknown; restored from __doc__    """ x.__lt__(y) <==> x<y """    pass  def __mul__(self, n): # real signature unknown; restored from __doc__    """ x.__mul__(n) <==> x*n """    pass  @staticmethod # known case of __new__  def __new__(S, *more): # real signature unknown; restored from __doc__    """ T.__new__(S, ...) -> a new object with type S, a subtype of T """    pass  def __ne__(self, y): # real signature unknown; restored from __doc__    """ x.__ne__(y) <==> x!=y """    pass  def __repr__(self): # real signature unknown; restored from __doc__    """ x.__repr__() <==> repr(x) """    pass  def __reversed__(self): # real signature unknown; restored from __doc__    """ L.__reversed__() -- return a reverse iterator over the list """    pass  def __rmul__(self, n): # real signature unknown; restored from __doc__    """ x.__rmul__(n) <==> n*x """    pass  def __setitem__(self, i, y): # real signature unknown; restored from __doc__    """ x.__setitem__(i, y) <==> x[i]=y """    pass  def __setslice__(self, i, j, y): # real signature unknown; restored from __doc__    """    x.__setslice__(i, j, y) <==> x[i:j]=y                    Use of negative indices is not supported.    """    pass  def __sizeof__(self): # real signature unknown; restored from __doc__    """ L.__sizeof__() -- size of L in memory, in bytes """    pass  __hash__ = Nonelist

tuple 元組類型

lass tuple(object):  """  tuple() -> empty tuple  tuple(iterable) -> tuple initialized from iterable's items    If the argument is a tuple, the return value is the same object.  """  def count(self, value): # real signature unknown; restored from __doc__    """ T.count(value) -> integer -- return number of occurrences of value """    return 0  def index(self, value, start=None, stop=None): # real signature unknown; restored from __doc__    """    T.index(value, [start, [stop]]) -> integer -- return first index of value.    Raises ValueError if the value is not present.    """    return 0  def __add__(self, y): # real signature unknown; restored from __doc__    """ x.__add__(y) <==> x+y """    pass  def __contains__(self, y): # real signature unknown; restored from __doc__    """ x.__contains__(y) <==> y in x """    pass  def __eq__(self, y): # real signature unknown; restored from __doc__    """ x.__eq__(y) <==> x==y """    pass  def __getattribute__(self, name): # real signature unknown; restored from __doc__    """ x.__getattribute__('name') <==> x.name """    pass  def __getitem__(self, y): # real signature unknown; restored from __doc__    """ x.__getitem__(y) <==> x[y] """    pass  def __getnewargs__(self, *args, **kwargs): # real signature unknown    pass  def __getslice__(self, i, j): # real signature unknown; restored from __doc__    """    x.__getslice__(i, j) <==> x[i:j]                    Use of negative indices is not supported.    """    pass  def __ge__(self, y): # real signature unknown; restored from __doc__    """ x.__ge__(y) <==> x>=y """    pass  def __gt__(self, y): # real signature unknown; restored from __doc__    """ x.__gt__(y) <==> x>y """    pass  def __hash__(self): # real signature unknown; restored from __doc__    """ x.__hash__() <==> hash(x) """    pass  def __init__(self, seq=()): # known special case of tuple.__init__    """    tuple() -> empty tuple    tuple(iterable) -> tuple initialized from iterable's items        If the argument is a tuple, the return value is the same object.    # (copied from class doc)    """    pass  def __iter__(self): # real signature unknown; restored from __doc__    """ x.__iter__() <==> iter(x) """    pass  def __len__(self): # real signature unknown; restored from __doc__    """ x.__len__() <==> len(x) """    pass  def __le__(self, y): # real signature unknown; restored from __doc__    """ x.__le__(y) <==> x<=y """    pass  def __lt__(self, y): # real signature unknown; restored from __doc__    """ x.__lt__(y) <==> x<y """    pass  def __mul__(self, n): # real signature unknown; restored from __doc__    """ x.__mul__(n) <==> x*n """    pass  @staticmethod # known case of __new__  def __new__(S, *more): # real signature unknown; restored from __doc__    """ T.__new__(S, ...) -> a new object with type S, a subtype of T """    pass  def __ne__(self, y): # real signature unknown; restored from __doc__    """ x.__ne__(y) <==> x!=y """    pass  def __repr__(self): # real signature unknown; restored from __doc__    """ x.__repr__() <==> repr(x) """    pass  def __rmul__(self, n): # real signature unknown; restored from __doc__    """ x.__rmul__(n) <==> n*x """    pass  def __sizeof__(self): # real signature unknown; restored from __doc__    """ T.__sizeof__() -- size of T in memory, in bytes """    passtuple

字典類型

class dict(object):   """   dict() -> new empty dictionary   dict(mapping) -> new dictionary initialized from a mapping object's     (key, value) pairs   dict(iterable) -> new dictionary initialized as if via:     d = {}     for k, v in iterable:       d[k] = v  dict(**kwargs) -> new dictionary initialized with the name=value pairs    in the keyword argument list. For example: dict(one=1, two=2)  """  def clear(self): # real signature unknown; restored from __doc__    """ 清除內容 """    """ D.clear() -> None. Remove all items from D. """    pass  def copy(self): # real signature unknown; restored from __doc__    """ 淺拷貝 """    """ D.copy() -> a shallow copy of D """    pass  @staticmethod # known case  def fromkeys(S, v=None): # real signature unknown; restored from __doc__    """    dict.fromkeys(S[,v]) -> New dict with keys from S and values equal to v.    v defaults to None.    """    pass  def get(self, k, d=None): # real signature unknown; restored from __doc__    """ 根據key獲取值,d是默認值 """    """ D.get(k[,d]) -> D[k] if k in D, else d. d defaults to None. """    pass  def has_key(self, k): # real signature unknown; restored from __doc__    """ 是否有key """    """ D.has_key(k) -> True if D has a key k, else False """    return False  def items(self): # real signature unknown; restored from __doc__    """ 所有項的列表形式 """    """ D.items() -> list of D's (key, value) pairs, as 2-tuples """    return []  def iteritems(self): # real signature unknown; restored from __doc__    """ 項可迭代 """    """ D.iteritems() -> an iterator over the (key, value) items of D """    pass  def iterkeys(self): # real signature unknown; restored from __doc__    """ key可迭代 """    """ D.iterkeys() -> an iterator over the keys of D """    pass  def itervalues(self): # real signature unknown; restored from __doc__    """ value可迭代 """    """ D.itervalues() -> an iterator over the values of D """    pass  def keys(self): # real signature unknown; restored from __doc__    """ 所有的key列表 """    """ D.keys() -> list of D's keys """    return []  def pop(self, k, d=None): # real signature unknown; restored from __doc__    """ 獲取并在字典中移除 """    """    D.pop(k[,d]) -> v, remove specified key and return the corresponding value.    If key is not found, d is returned if given, otherwise KeyError is raised    """    pass  def popitem(self): # real signature unknown; restored from __doc__    """ 獲取并在字典中移除 """    """    D.popitem() -> (k, v), remove and return some (key, value) pair as a    2-tuple; but raise KeyError if D is empty.    """    pass  def setdefault(self, k, d=None): # real signature unknown; restored from __doc__    """ 如果key不存在,則創建,如果存在,則返回已存在的值且不修改 """    """ D.setdefault(k[,d]) -> D.get(k,d), also set D[k]=d if k not in D """    pass  def update(self, E=None, **F): # known special case of dict.update    """ 更新      {'name':'alex', 'age': 18000}      [('name','sbsbsb'),]    """    """    D.update([E, ]**F) -> None. Update D from dict/iterable E and F.    If E present and has a .keys() method, does:   for k in E: D[k] = E[k]    If E present and lacks .keys() method, does:   for (k, v) in E: D[k] = v    In either case, this is followed by: for k in F: D[k] = F[k]    """    pass  def values(self): # real signature unknown; restored from __doc__    """ 所有的值 """    """ D.values() -> list of D's values """    return []  def viewitems(self): # real signature unknown; restored from __doc__    """ 所有項,只是將內容保存至view對象中 """    """ D.viewitems() -> a set-like object providing a view on D's items """    pass  def viewkeys(self): # real signature unknown; restored from __doc__    """ D.viewkeys() -> a set-like object providing a view on D's keys """    pass  def viewvalues(self): # real signature unknown; restored from __doc__    """ D.viewvalues() -> an object providing a view on D's values """    pass  def __cmp__(self, y): # real signature unknown; restored from __doc__    """ x.__cmp__(y) <==> cmp(x,y) """    pass  def __contains__(self, k): # real signature unknown; restored from __doc__    """ D.__contains__(k) -> True if D has a key k, else False """    return False  def __delitem__(self, y): # real signature unknown; restored from __doc__    """ x.__delitem__(y) <==> del x[y] """    pass  def __eq__(self, y): # real signature unknown; restored from __doc__    """ x.__eq__(y) <==> x==y """    pass  def __getattribute__(self, name): # real signature unknown; restored from __doc__    """ x.__getattribute__('name') <==> x.name """    pass  def __getitem__(self, y): # real signature unknown; restored from __doc__    """ x.__getitem__(y) <==> x[y] """    pass  def __ge__(self, y): # real signature unknown; restored from __doc__    """ x.__ge__(y) <==> x>=y """    pass  def __gt__(self, y): # real signature unknown; restored from __doc__    """ x.__gt__(y) <==> x>y """    pass  def __init__(self, seq=None, **kwargs): # known special case of dict.__init__    """    dict() -> new empty dictionary    dict(mapping) -> new dictionary initialized from a mapping object's      (key, value) pairs    dict(iterable) -> new dictionary initialized as if via:      d = {}      for k, v in iterable:        d[k] = v    dict(**kwargs) -> new dictionary initialized with the name=value pairs      in the keyword argument list. For example: dict(one=1, two=2)    # (copied from class doc)    """    pass  def __iter__(self): # real signature unknown; restored from __doc__    """ x.__iter__() <==> iter(x) """    pass  def __len__(self): # real signature unknown; restored from __doc__    """ x.__len__() <==> len(x) """    pass  def __le__(self, y): # real signature unknown; restored from __doc__    """ x.__le__(y) <==> x<=y """    pass  def __lt__(self, y): # real signature unknown; restored from __doc__    """ x.__lt__(y) <==> x<y """    pass  @staticmethod # known case of __new__  def __new__(S, *more): # real signature unknown; restored from __doc__    """ T.__new__(S, ...) -> a new object with type S, a subtype of T """    pass  def __ne__(self, y): # real signature unknown; restored from __doc__    """ x.__ne__(y) <==> x!=y """    pass  def __repr__(self): # real signature unknown; restored from __doc__    """ x.__repr__() <==> repr(x) """    pass  def __setitem__(self, i, y): # real signature unknown; restored from __doc__    """ x.__setitem__(i, y) <==> x[i]=y """    pass  def __sizeof__(self): # real signature unknown; restored from __doc__    """ D.__sizeof__() -> size of D in memory, in bytes """    pass  __hash__ = Nonedict

一、元素分類

有如下值集合 [11,22,33,44,55,66,77,88,99,90...],將所有大于 66 的值保存至字典的第一個key中,將小于 66 的值保存至第二個key的值中。 即: {'k1': 大于66的所有值, 'k2': 小于66的所有值}

二、查找

查找列表中元素,移除每個元素的空格,并查找以 a或A開頭 并且以 c 結尾的所有元素。

li = ["alec", " aric", "Alex", "Tony", "rain"]
tu = ("alec", " aric", "Alex", "Tony", "rain") 
dic = {'k1': "alex", 'k2': ' aric',  "k3": "Alex", "k4": "Tony"}
 

三、輸出商品列表,用戶輸入序號,顯示用戶選中的商品

商品 li = ["手機", "電腦", '鼠標墊', '游艇']

四、購物車

功能要求:

•要求用戶輸入總資產,例如:2000

•顯示商品列表,讓用戶根據序號選擇商品,加入購物車

•購買,如果商品總額大于總資產,提示賬戶余額不足,否則,購買成功。

•附加:可充值、某商品移除購物車

以上這篇python字符類型的一些方法小結就是小編分享給大家的全部內容了,希望能給大家一個參考,也希望大家多多支持VEVB武林網。


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