FAQ
In article <cdac0350.0308010032.378d6f08 at posting.google.com>,
gregadelliot at hotmail.com (jeff) wrote:
I was just creating an encryption/ decryption program in python, ive
got no problem with the algothims or anything like that. my only
difficulty is how to i take a file and read in each charecter and then
preform and operation to it and then output it to another file,
basically i just wanna know how to take a string and then perform
actions to each charecter
I think (untested code ahead), for small files whose
contents fit comfortably in memory:

for character in my_input_file.read():
my_output_file.write (modified (character))

For large files, some variant of

characters = my_input_file.read (1024)
while characters:
for char in characters:
my_output_file.write (modified (char))
characters = my_input_file.read (1024)

with the buffer-size changed from 1024 to some better
number, if necessary.

Regards. Mel.

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postedAug 1, '03 at 8:32a
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