Return a complex number from function

Question

I want to assign an imaginary number to a variable:

import math

a = sqrt(4)j
print(a)

This results in a SyntaxError:

Line 3: SyntaxError: bad input ('j')

I can assign an imaginary number to variable like this:

a = 2j

How do I solve this?

(closed) dup? https://stackoverflow.com/questions/8370637/complex-numbers-usage-in-python — Aran-Fey, Apr 12 '18 at 14:20
@Aran-Fey That question was closed, though I found the answers useful. I have voted to reopen it. — chrisaycock, Apr 12 '18 at 14:21

user3483203 · Answer 1 · 2018-04-12T14:29:20.603

8

You can simply use complex() to return:

real + imag*1j or convert a string or number to a complex number

>>> a = complex(0,math.sqrt(4))
>>> a
2j

edited Apr 12 '18 at 14:29

answered Apr 12 '18 at 14:17

user3483203

score 3 · Answer 2 · edited Apr 12 '18 at 14:22

3

Use the complex function.

>>> complex(0, sqrt(4))
2j

edited Apr 12 '18 at 14:22

Aran-Fey

answered Apr 12 '18 at 14:17

2 Answers2