pdb | 易学教程

In the Python debugger pdb, how do you exit interactive mode without terminating the debugging session

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Using python 3.5.1 When I run a script using the python debugger module: [home]# python -m pdb myscript.py This starts a debug session: > /somepath/to/myscript.py(1)<module>() -> import os (Pdb) If I want to enter an interactive terminal from within the debug session I can issue the interact command: (Pdb) interact *interactive* >>> Now I can interact with th code as if I was in a running python interactive mode, with access to any functions or variable in scope of the script running in the debugger at the time I entered interact mode. When I issue the command to exit the interactive mode (to

'NameError: global name is not defined' under pdb, for dictionary that does exist

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I've encountered an issue re scopes in a lambda function. I can successfully output foo to stdout but I get an error when using max() including a lambda - see simplified code below... All in all, I am trying find the largest value for a nested key budget within an unknown number of first order keys. (Pdb) foo = self.some_method() # some_method() returns a dict, printed in the next step (Pdb) pp foo {'1': {'count': 1, 'extra_data': {'activity-count': 1, 'budget': 0, [...MORE KEY-VALUE PAIRS HERE...] 'version': 1}, [...LOTS MORE KEY-VALUE PAIRS HERE...] 'elements_total': defaultdict(<type 'int'>

Use ipdb instead of pdb with py.test --pdb option

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I want to use ipdb instead of pdb with py.test --pdb option. Is this possible? If so, how? Clearly, I can use import ipdb; ipdb.set_trace() in the code but that requires to run the test, watch it fail, open a file, find the point of failure in said file, write the above line, re-run the tests. Lots of hassle if I could have something that by passes all of that. Have you tried pytest-ipdb ? Looks like it's exactly what you are looking for? Use this option to set custom debugger: --pdbcls=IPython.terminal.debugger:Pdb It can also be included in pytest.ini using addopts : [pytest] addopts = -

pdb调试程序

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首先 import pdb 导入模块，进行语句调试，也可以进行函数调试。来源： https://www.cnblogs.com/bcyczhhb/p/11796673.html

How do I change a value while debugging python with pdb?

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I want to run pdb, step through the code, and at some point change the value pointed at by some name. So I might want to change the value pointed at by the name 'stationLat'. But it seems I can't. Here's the example: >>> import extractPercentiles >>> import pdb >>> pdb.run( "extractPercentiles.extractOneStation()" ) > <string>(1)<module>()->None (Pdb) s --Call-- > /scratch/extractPercentiles.py(96)extractOneStation() -> def extractOneStation() : (Pdb) tbreak 132 Breakpoint 3 at /scratch/extractPercentiles.py:132 (Pdb) c Deleted breakpoint 3 > /scratch/extractPercentiles.py(132

PDB won't stop on breakpoint

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I'm quite new with debugging directly with pdb and I am having some issues debugging my Django application. Here is what I'm doing: python -m pdb manage.py runserver (pdb) b core/views.py:22 Breakpoint 2 at /Users/raphaelcruzeiro/Documents/Projects/pdb_test/core/views.py:22 (Pdb) c However the execution passes directly through the breakpoint. Am I missing some command? The manual doesn't elaborate on setting a breakpoint anymore than this. I've been through the same problem. Try something like python -m pdb ./manage.py runserver --nothreading --noreload 127.0.0.1:8080 . It solved the issue for

Python调试工具

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1. 日志通过日志或者print来打印变量。必要时可以打印 locals() 和 globals() 建议使用logging.debug()来代替print，这样到了正式环境，就可以统一删除这些日志。 2.trace Python有个trace模式，可以打印整个程序的执行流 # encoding=utf8 def f(): print 'aa' if __name__ == '__main__': f() 例如这段简单的程序，执行 python -mtrace --trace test.py 就会输出下面的日志： --- modulename: test, funcname: <module> # test模块，module级函数 test.py(2): def f(): #test.py的第2行，执行def f命令定义函数 test.py(6): if __name__ == '__main__': test.py(7): f() --- modulename: test, funcname: f test.py(3): print 'aa' aa --- modulename: trace, funcname: _unsettrace trace.py(80): sys.settrace(None) 可以详细得看到这代代码在Python中的执行流程。当代码比较复杂

Python - start interactive debugger when exception would be otherwise thrown

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问题 Is there any way to make a python program start an interactive debugger, like what import pdb; pdb.set_trace() instead of actually throwing an exception? I know the difficulty of making this work, but it would be much more valuable than a huge stack trace after which I have to use to figure out where to insert breakpoints and then restart the program to debug it. I know that simply making the debugger start instead of throwing an exception would not make sense because any exception can be

Is it possible to step backwards in pdb?

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问题 After I hit n to evaluate a line, I want to go back and then hit s to step into that function if it failed. Is this possible? The docs say: j(ump) lineno Set the next line that will be executed. Only available in the bottom-most frame. This lets you jump back and execute code again, or jump forward to skip code that you don’t want to run. 回答1: The GNU debugger, gdb: It is extremely slow, as it undoes single machine instruction at a time. The Python debugger, pdb: The jump command takes you

gdb, pdb笔记

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gdb gdb --args yourprogram 常用命令 r(run):从头开始运行 c(continue):继续运行 b(breakpoint) filepath:line or namespace::function(type):断点 s(step):运行当前行代码，会进入子函数 n(next):运行当前行代码，不会进入子函数 bt(backtrace):查看当前函数栈 until [line]:运行直到推出循环体，或者到指定行号 d(delete) n:删除第n个断点 disable n:暂停第n个断点 clear n:清除第n行的断点 info [threads, breakpoints]:查看线程，断点信息 t(thread) n:进入第n个线程 Ctrl+A+X可以开关图形化界面 p(print) x:输出x watch x:监控x，当x发生变化的时候停住并显示x display x:单步调试时，每一次都重新打印x q(quit):退出gdb pdb python3 -m pdb yourprogram or add "import pdb;pdb.set_trace()" in your program 用法和gdb很相似但是没有图形化界面，也不能调试多线程来源： https://www.cnblogs.com/Randolph87/p/11779183