Print comma separated items without newline

Question

I thought I was copying word for word from a previous question/answer, but, I don't get what I wanted.

I was trying to answer a question from an online list of python questions for beginners. I wrote the following in a file called q.py and then gave the executed it with python3 q.py in my shell.

The file q.py looks like:

from math import sqrt
C=50
H=30
inp = input('input values:   ')
vals = inp.split(',')
print(vals)
for x in vals:
    D=int(x)
    print(int(sqrt(2*C*D/H)),sep=',',end='')
print()

I input 100,150,180 as the question suggested, the required answer is:

18,22,24 

but the answer I get is:

182224

When I omit the "end" argument to print, I get 18, 22, and 24 separated by newlines.

Answer 1

sep is used to separate values if multiple values are actually provided; you provide one value for every loop so the separator isn't used.

Instead of using sep=',', use end=',' to get the desired effect:

for x in vals:
    D=int(x)
    print(int(sqrt(2*C*D/H)),end=',')
print()

Using similar input, the result printed out is:

['100', '150', '180']
18,22,24,

If, for example, you provided multiple values, say, by unpacking a list comprehension in your print call, sep=',' would work like a charm:

print(*[int(sqrt(2*C*int(x)/H)) for x in vals], sep=',')

Prints:

18,22,24