Does python's input source include file input?

Python’s input sources include file reading and keyboard input.

Read keyboard input

Python provides the input() built-in function to read from standard input A line of text, the default standard input is the keyboard.

input can receive a Python expression as input and return the result of the operation.

#!/usr/bin/python3
str = input("请输入：");
print ("你输入的内容是: ", str)

This will produce the following results corresponding to the input:

请输入：ABC
你输入的内容是:  ABC

FileRead and write

open () will return a file object. The basic syntax format is as follows:

open(filename, mode)

filename: A string value containing the name of the file you want to access.

mode: Determines the mode of opening the file: read-only, write, append, etc. See the complete list of all possible values ​​below. This parameter is optional and the default file access mode is read-only (r).

#!/usr/bin/python3
# 打开一个文件
f = open("/tmp/foo.txt", "r")
str = f.read()
print(str)
# 关闭打开的文件
f.close()

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