How do I convert a Python UUID into a string?

Solution 1:

you can try this !

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

Solution 2:

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).

Solution 3:

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.

Solution 4:

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.