python pdb调试方法分享

import pdb

def pdb_test(arg):
    for i in range(arg):
        print(i)
    return arg

pdb.run("pdb_test(3)")
 

(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
 

(Pdb) c
> c:\users\plpcc\desktop\pdbtest.py(4)pdb_test()
-> for i in range(arg):

(Pdb) l
    import pdb

B   def pdb_test(arg):
  ->      for i in range(arg):
             print(i)
       return arg

     pdb.run("pdb_test(3)")

(Pdb) a
arg = 3

 s, n：

(Pdb) p i

 condition：
 

> 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时才触发断点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直接打印未断住
> c:\users\plpcc\desktop\pdbtest.py(5)pdb_test()
-> print(i)             //触发断点，i==1
(Pdb) p i

bt:

(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：

(Pdb) r

--Return--
> c:\users\plpcc\desktop\pdbtest.py(6)pdb_test()->3 //代码位置、函数返回值->3
-> return arg                                       //代码位置的语句
(Pdb) l
    import pdb

    def pdb_test(arg):
        for i in range(arg):
            print(i)
 ->      return arg

    pdb.run("pdb_test(3)")

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)

> 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]

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)