How can Python read the entire contents of a file?

To access all the contents of a file, you can use the open() function to open the file, and then use the .read() method to read the contents of the file. Here is an example code:

# 打开文件
file = open("example.txt", "r")

# 读取文件的所有内容
content = file.read()

# 关闭文件
file.close()

# 打印文件的内容
print(content)

In the example above, the first parameter of the open() function is the file name to be opened, and the second parameter is the mode in which the file is to be opened. The “r” parameter indicates opening the file in read-only mode. The read() method is used to read all the contents of the file and store them in the variable content. Then, we use the close() method to close the file and release system resources. Finally, we print the contents of the file using the print() function.

Please note that it is assumed the file “example.txt” exists in the current working directory. If the file does not exist, a FileNotFoundError exception will be raised.