import pdb
def pdb_test(arg):
for i in range(arg):
print(i)
return arg
pdb.run("pdb_test(3)")
b 函數(shù)名、行號：
打斷點(diǎn)，b可以查詢所有的斷點(diǎn)。
(Pdb) b pdb_test
Breakpoint 1 at c:/users/plpcc/desktop/pdbtest.py:3
(Pdb) b
Num Type Disp Enb Where
breakpoint keep yes at c:/users/plpcc/desktop/pdbtest.py:3
c：
運(yùn)行程序，直到遇到斷點(diǎn)。
(Pdb) c
> c:/users/plpcc/desktop/pdbtest.py(4)pdb_test()
-> for i in range(arg):
l：
查看斷點(diǎn)周圍的代碼
(Pdb) l
import pdb
B def pdb_test(arg):
-> for i in range(arg):
print(i)
return arg
pdb.run("pdb_test(3)")
a:
查看參數(shù)
單步運(yùn)行,區(qū)別s會(huì)進(jìn)入路徑中的函數(shù)，n不會(huì)進(jìn)入 p：
查看表達(dá)式的值
條件斷點(diǎn)，只有條件為true斷點(diǎn)才命中
> c:/users/plpcc/desktop/pdbtest.py(5)pdb_test()
-> print(i)
(Pdb) l
import pdb
def pdb_test(arg):
for i in range(arg):
B-> print(i)
return arg
pdb.run("pdb_test(3)")
[EOF]
(Pdb) b
Num Type Disp Enb Where
breakpoint keep yes at c:/users/plpcc/desktop/pdbtest.py:5
(Pdb) condition 2 i==1 //i==1時(shí)才觸發(fā)斷點(diǎn)2
New condition set for breakpoint 2.
(Pdb) b
Num Type Disp Enb Where
breakpoint keep yes at c:/users/plpcc/desktop/pdbtest.py:5
stop only if i==1
(Pdb) c
//i==0直接打印未斷住
> c:/users/plpcc/desktop/pdbtest.py(5)pdb_test()
-> print(i) //觸發(fā)斷點(diǎn)，i==1
(Pdb) p i
bt:
查看調(diào)用堆棧
(Pdb) bt
c:/python33/lib/bdb.py(405)run()
-> exec(cmd, globals, locals)
<string>(1)<module>()
> c:/users/plpcc/desktop/pdbtest.py(5)pdb_test()
-> print(i)
r：
執(zhí)行到函數(shù)返回
(Pdb) r
--Return--
> c:/users/plpcc/desktop/pdbtest.py(6)pdb_test()->3 //代碼位置、函數(shù)返回值->3
-> return arg //代碼位置的語句
(Pdb) l
import pdb
def pdb_test(arg):
for i in range(arg):
print(i)
-> return arg
pdb.run("pdb_test(3)")
通過pdb.set_trace() 在代碼中指定位置嵌入一個(gè)斷點(diǎn)，通常可以通過調(diào)試開關(guān)來控制
import pdb
__DEBUG__ = True
def pdb_test(arg):
if True == __DEBUG__:
pdb.set_trace()
for i in range(arg):
print(i)
return arg
pdb_test(3)
運(yùn)行后在pdb.set_trace()位置被斷住，當(dāng)__DEBUG__ = False，代碼正常運(yùn)行
> c:/users/plpcc/desktop/pdbtest.py(8)pdb_test()
-> for i in range(arg):
(Pdb) l
__DEBUG__ = True
def pdb_test(arg):
if True == __DEBUG__:
pdb.set_trace()
-> for i in range(arg):
print(i)
return arg
pdb_test(3)
[EOF]
通過pdb.pm()進(jìn)行事后調(diào)試，可以跟蹤異常程序最后的堆載信息：
Traceback (most recent call last):
File "C:/Users/plpcc/Desktop/pdbTest.py", line 13, in <module>
pdb_test(3)
File "C:/Users/plpcc/Desktop/pdbTest.py", line 10, in pdb_test
1/0
ZeroDivisionError: division by zero
>>> import pdb
>>> pdb.pm()
> c:/users/plpcc/desktop/pdbtest.py(10)pdb_test()
-> 1/0
(Pdb) l
def pdb_test(arg):
if True == __DEBUG__:
pdb.set_trace()
for i in range(arg):
print(i)
-> 1/0
return arg
pdb_test(3)
