# 數(shù)學相關(guān)模塊import mathr = math.floor(3.2) # 向下取整print(r)r = math.ceil(4.5)  # 向上取整print(r)r = round(3.4999)  # 四舍五入print(r)r = math.pow(3,4)  # =3**4print(r)r = math.sqrt(25)  # 開平方print(r)r = math.fabs(-0.23) # 絕對值(小數(shù))print(r)r = abs(-2)     # 絕對值print(r)r = math.modf(3.14) # 拆分小數(shù)和整數(shù)print(r)r = math.copysign(3,-5) #-5的符號賦給3print(r)lt = [1,4,5,7]    # 計算lt中數(shù)字的和(結(jié)果浮點數(shù)）r = math.fsum(lt)print(r)r = sum(lt)     # 同上（結(jié)果整數(shù)）print(r)print(math.pi)    # 圓周率print(math.e)    # 自然對數(shù)# 隨機數(shù)模塊import randomr = random.random() # 隨機獲取0~1小數(shù)print(r)lt = [2,3,5,7,'A','C','d']r = random.choice(lt) # 隨機獲取lt中一個值print(r)random.shuffle(lt) #打亂列表print(lt)r = random.randrange(5,15,2) #獲取制定范圍內(nèi)隨機的整數(shù)print(r)r = random.uniform(4,24)   #獲取制定范圍內(nèi)隨機數(shù)print(r)# 內(nèi)建函數(shù)nums = [2,3,5,7,0,23,21,-11,0.4]print(max(nums))    # 獲取最大值print(min(nums))    # 獲取最小值# 進制相關(guān)hex(3)oct(3)bin(3)print(ord('a')) # 獲取相對應(yīng)的ascii碼print(chr(90))  # 獲取ascii碼相對應(yīng)的字符num = 99var = 'num + 1'nums = eval(var) # 將python字符串當做代碼執(zhí)行 慎用print(nums)