How to merge data in a existant file

[fquiquet at lemel.fr]

Hi,

I use python to developp script file.
I have a problem when I want to write data in a existant file.

I know how to write data in a new file :

f=open('file.name','w')
f.write('data')
f.close()

I don't know what is the function that permit to add data whithout erase
existing data.

Thank's for your response to fquiquet at lemel.fr

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