consider-using-join raised for code equivalent to ", ".join("a", "b", "c")

[Pierre-Sassoulas]

Current problem

For

result = ''
for number in ['1', '2', '3']:
    result += number  # [consider-using-join]

Where the final result would be "".join(['1', '2', '3']) we already raise a consider-using-join. Sometime function that could be join instead are sneakier, for example:

result = ''
for number in ['1', '2', '3']:
    result += f"{number}, "
result = result[:-2]

Could be ", ".join(['1', '2', '3']).

Desired solution

consider-using-join detecting possible join using a non-empty string.

[Scofield1]

Try this

a = ['1', '2', '3'] result = "".join(a) print(result)