Detailed explanation of Python debugging knowledge

After programming the program, use various means to conduct error checking and troubleshooting. The correctness of a program is not only reflected in the completion of normal functions, but more importantly, the correct handling of unexpected situations. From a psychological perspective, developers and debuggers should not be the same person. This article will share with you a detailed explanation of Python tuning knowledge, hoping to help you.

import pdb
age = int(input("请输入你家狗狗的年龄: "))
print("")#加入断点pdb.set_trace()if age < 0:
    print("你是在逗我吧!")elif age == 1:
    print("相当于 14 岁的人。")elif age == 2:
    print("相当于 22 岁的人。")elif age > 2:
    human = 22 + (age - 2) * 5
    print("对应人类年龄: ", human)

1. Add breakpoint

   import pdb
   pdb.set_trace()

   Copy after login

   Copy after login

2. Start running debugging
   

   ##--> ; The arrow indicates the current statement;
   (Pdb) indicates waiting for debugging instructions.

3. #hCommand (help) You can view all debugging instructions.
   
   

4. lInstructions (list) View the code context.
   
   

5. pCommand is used to view variables. Usage:
   p Variable name For example, view the value of the age variable
   
   

6. ##n

   Command (next) Single-step execution instructions.
   
   

7. b

   Command (break) Add the specified breakpoint. Usage: b line number
   
   

##c
8. Command (continue)

   Run to the breakpoint
   
   

   

s
9. Instruction (step)

   Enter the function After we modified the original code , add test function. This command can enter the function for debugging
   
   
   

r
10. Instruction (return)

    The execution code returns from the current function
    

    Summary

import pdb

age = int(input("请输入你家狗狗的年龄: "))
print("")#加入断点pdb.set_trace()if age < 0:
    print("你是在逗我吧!")elif age == 1:
    print("相当于 14 岁的人。")elif age == 2:
    print("相当于 22 岁的人。")elif age > 2:
    human = 22 + (age - 2) * 5
    print("对应人类年龄: ", human)

import pdb
pdb.set_trace()

Copy after login

Copy after login

1. Start running debugging

2. 
   -->

   The arrow indicates the current statement;

   (Pdb) indicates waiting for debugging instructions.
   

#h
3. Command (help)

   You can view all debugging instructions.
   
   

l
4. Instructions (list)

   View the code context.
   
   

p
5. Command

   is used to view variables. Usage: p Variable name
   For example, view the value of the age variable
   
   

   ##n
Command (next)
6. Single-step execution instructions.

   
   
   

   b
Command (break)
7. Add the specified breakpoint. Usage:

   b line number
   
   ##c

   Command (continue)
Run to the breakpoint

8. 
   
   

   s

   Instruction (step)
Enter the function
9. After we modified the original code , add test function. This command can enter the function for debugging

10. rInstruction (return)
    Execution code returns from the current function

Summary



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