The introduction method of executing Python source code or Python source code file (novice, please enter the old bird and turn left)

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At the beginning Python when , We always want to execute the code right away , But clearly follow the tutorial step by step , How to report errors on the full screen ？

The screenshot above appears because there is no clear distinction between when to enter python Interactive mode , When you don't need to enter python Interactive mode .

Let's distinguish what is Python Source code and Python The source code file ：

1. Python Source code ：Python Source code , for example

print("hello world")
 Copy code 

2. Python The source code file ： One content is Python Source code files , Is similar to the doc A document is a document whose content is text . A file named hello.py The document of Python The source code file .

When you need to enter Python Interactive mode ？
When it comes to python The source code needs to enter Python Interactive mode ：

1. Input... At the terminal python
2. Enter your... In this terminal window Python Source code

The biggest convenience of interactive mode is that you can get the execution result of code faster . One line of input gets one line of output , Very suitable for debugging simple code .

When you don't need to enter Python Interaction mode ？
When it comes to Python Source file , You don't need to enter Python Interactive mode , Call directly Python The interpreter can .
At this time, the calling format is ： python python Source file path

1. Access terminal
2. python python Source file path

summary ：
When it comes to python The source code needs to enter Python Interactive mode ;
When it comes to Python Source file , You don't need to enter Python Interactive mode , Call directly Python The interpreter can .