How to single-step debug in python

How to single-step debug Python? Let me introduce you to single-step debugging:

Method 1: Execute python -m pdb myscript.py

(Pdb) will automatically stop at the first line. Wait for debugging, then you can look at the help.

Method 2: At the beginning of the program being debugged: import pdb and set a breakpoint on your line of code: pdb.set_trace()

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(Pdb) h
Explain these key commands

(Pdb) b 10 #Set the breakpoint at line 10 of this py
or (Pdb) b ots.py:20 #Set the breakpoint at line 20 of ots.py
Delete the breakpoint (Pdb) b #View the breakpoint Point number
(Pdb)cl 2 #Delete the second breakpoint

(Pdb)n #Single-step execution
(Pdb)s #Fine point execution That is to say, it will go down to method
(Pdb)c #Jump to the next breakpoint

(Pdb)p param #View the current variable value
( Pdb)l #View the code executed somewhere
(Pdb)a #View all variables in the stack

import pdb
def tt():
pdb.set_trace()
for i in range(1, 5):
print i
<<< tt()
#这里支持 n p c 而已
< (3)tt()
(Pdb) n

pdb single The step-by-step debugging method is summarized as follows:

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