Why is print() not working anymore with python?

Question

in fact this should not be a problem because it\'s fairly basic. I just want to print out an array of categories, but in one line and separated by comma.

for ent         


        

Answer 1

You are almost certainly experiencing output buffering by line. The output buffer is flushed every time you complete a line, but by suppressing the newline you never fill the buffer far enough to force a flush.

You can force a flush using flush=True (Python 3.3 and up) or by calling the flush() method on sys.stdout:

for entry in categories:
    print(entry, ", ", end='', flush=True)

You could simplify that a little, make , the end value:

for entry in categories:
    print(entry, end=', ', flush=True)

to eliminate the space between the entry and the comma.

Alternatively, print the categories as one string by using the comma as the sep separator argument:

print(*categories, sep=', ')