How to use input to input a list in Python

How to use input to input a list in Python

When using input to input data, use commas to separate each item in the list, and then use ast.literal_eval()The method can be converted into a list.

The code is as follows:

import ast
lists = ast.literal_eval(input("请输入列表，使用逗号隔开: "))  
print(lists)

The execution result is as follows:

The function of ast.literal_eval() is torestore the data to It itself or a data type that can be converted into . The

eval() function also has the same effect, but they are different:

eval does not know whether the content to be converted is legal before doing the calculation. (safe) python data type. It is only calculated when the function is called. If the calculated content is not a legal Python type, an exception will be thrown.

ast.literal will determine whether the content to be calculated is a legal python type after calculation. If so, the operation will be performed, otherwise the operation will not be performed.

Therefore, it is recommended to use ast.literal_eval

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