file.truncate(file.tell - 1) #explanation - the function truncate will resize the file to the  #full size - 1 and that means it will remove the last character #if you need to do that while you are reading/writing somewhere using #seek() you can use this function -> def get_size(fileobject):     fileobject.seek(0,2) # move the cursor to the end of the file     size = fileobject.tell()     return size #and then fsize = get_size(file) file.truncate(fsize - 1)

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