Only first letter in the cell of the file.

[perfringo]

So write it to file... or print it to file:

>>> help(print)
Help on built-in function print in module builtins:

print(...)
    print(value, ..., sep=' ', end='\n', file=sys.stdout, flush=False)
    
    Prints the values to a stream, or to sys.stdout by default.
    Optional keyword arguments:
    file:  a file-like object (stream); defaults to the current sys.stdout.
    sep:   string inserted between values, default a space.
    end:   string appended after the last value, default a newline.
    flush: whether to forcibly flush the stream.
(END)

As you can read print() function in Python supports a "file" argument, which specifies where the function should write a given object(s) to (default is sys.stdout). But one can specify file and do something along those lines:

with open('my_file.csv', 'a') as f:        
    print(f'{name}, {surname}', file=f)