Python 控制台 - Python

If you are a Python programmer, you must be familiar with the Python console, which is a way to interact with the Python interpreter. In this console, you can execute Python code and see the results immediately. This is a great way to test your code and to explore Python's capabilities.

Starting the Python console

To start the Python console, open a terminal or command prompt and type python. This will start the Python interpreter and you will be greeted with a prompt that looks like this:

Python 3.9.0 (default, Oct  6 2020, 13:48:23) 
[Clang 12.0.0 (clang-1200.0.32.2)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>>

Now you can type Python code and see the results immediately.

Using the Python console

The Python console can be used to execute simple one-liners, or even full-blown Python scripts. You can use it to test functions and classes, explore libraries, and debug your code.

Here are a few examples of what you can do in the Python console:

# Execute a simple Python expression
>>> 2 + 2
4

# Define a simple function
>>> def add(a, b):
...     return a + b
... 
>>> add(2, 3)
5

# Import a library and use it
>>> import math
>>> math.sqrt(4)
2.0

As you can see, the Python console is a powerful tool that can help you write and test code more efficiently.

Conclusion

In summary, the Python console is a way to interact with the Python interpreter. It allows you to execute Python code and see the results immediately. This is a great way to test code, explore Python's capabilities, and debug your code. If you are a Python programmer, the Python console is a must-have tool in your arsenal.