Example of python inserting a line at the beginning of text

concern

For a text file, you need to insert a line at the beginning and leave everything else unchanged.

cure

with open('', 'r+') as f:
 content = ()  
 (0, 0)
 ('writer:Fatsheep\n'+content)

Where the string 'writer:Fatsheep\n' contains the content to be inserted.

effect

After running the code:

take note of

(0, 0) indispensable, (off, whence=0) move the file pointer in the file, from whence (0 for the beginning of the file, 1 for the beginning of the file, 1 for the beginning of the file, 1 for the beginning of the file, 1 for the beginning of the file, 1 for the beginning of the file, 1 for the end of the file)

Table current position, 2 for end of file) offset off byte

The result of running without it is:

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