使用PDB模式调试Python程序介绍
以前在windows下一直用的idel带的功能调试python程序,在linux下没调试过。(很多时候只是print)就从网上查找一下~
方法:
python -m pdb a.py
a.py是python文件。
(Pdb)模式下的常用命令:
q
退出debug
h 即help,打印所有可以命令
h w
打印命令 w 的含意
n
执行当前行直到到达下一行或直到它返回
s
执行当前行,一有可能就停止(比如当前行有一个函数调用)。它和n(next)的区别是当前行中有函数调用时s(step)会停止当前行的执行而去调用那个函数,而n不会停止,直到计算完成这一行(到达下一行)。
b(reak) [[filename:]lineno | function[, condition]]
设置断点,可以是行号或函数。如 b 10, b foo, b foo,n == 5,最后在函数foo()入口处设置一个断点,但仅当n的值是5时才有效。当b命令无参数时,打印所有断点。
tb(reak) [[filename:]lineno | function[, condition]]
临时断点,只hit一次。
disable [bpnumber [bpnumber ...]]
使指点行的断点(们)失效
enable [bpnumber [bpnumber ...]]
使指定行上的断点(们)有效
c
继续执行程序,直到遇到下一个断点
w
即where,打印当前执行点的位置
l [first, [,last]]
输出当前行附近的源码
p expression
执行一个表达式当打印其值。
a(rgs)
打印当前函数的参数及其值
重复执行上次的命令
并遇到pdb不认识的命令时,会将它当成python表达式执行。如果你想执行的表达时,最前面加上 ! 字符,比如 !n == 5
多个debug命令可以写在一行上,中间用两个分号分隔,如 s;;s。

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