How do I convert a Python UUID into a string?

I need to be able to assign a UUID to a user and document this in a .txt file. This is all I have:

import uuid a = input("What's your name?") print(uuid.uuid1()) f.open(#file.txt) 

I tried:

f.write(uuid.uuid1()) 

but nothing comes up, may be a logical error but I don't know.

5 Answers

you can try this !

 a = uuid.uuid1() str(a) --> '448096f0-12b4-11e6-88f1-180373e5e84a' 

You can also do this. Removes the dashes as a bonus. link to docs.

import uuid my_id = uuid.uuid4().hex 

ffba27447d8e4285b7bdb4a6ec76db5c

UPDATE: trimmed UUIDs (without the dashes) are functionally identical to full UUIDS (discussion). The dashes in full UUIDs are always in the same position (article).

I came up with a different solution that worked for me as expected with Python 3.7.

import uuid uid_str = uuid.uuid4().urn your_id = uid_str[9:] 

urn is the UUID as a URN as specified in RFC 4122.

It's probably because you're not actually closing your file. This can cause problems. You want to use the context manager/with block when dealing with files, unless you really have a reason not to.

with open('file.txt', 'w') as f: # Do either this f.write(str(uuid.uuid1())) # **OR** this. # You can leave out the `end=''` if you want. # That was just included so that the two of these # commands do the same thing. print(uuid.uuid1(), end='', file=f) 

This will automatically close your file when you're done, which will ensure that it's written to disk.

[update] i added str function to write it as string and close the file to make sure it does it immediately,before i had to terminate the program so the content would be write

 import uuid def main(): a=input("What's your name?") print(uuid.uuid1()) main() f=open("file.txt","w") f.write(str(uuid.uuid1())) f.close() 

I guess this works for me