Feedback on formatting style

[geeanlooca]

Describe the bug Consider the following python class

class MZM:
    def output(self, laser, drive):
        if np.isfinite(self.extinction_ratio_dB):
            er = 10 ** (-self.extinction_ratio_dB / 20)
            modulated_laser_x = (1 - er) * modulated_laser_signal.iq[0] + er * laser.iq[0]

The line starting with modulated_laser_x = is longer than the 88-character limit, and is formatted as

class MZM:
    def output(self, laser, drive):
        if np.isfinite(self.extinction_ratio_dB):
            er = 10 ** (-self.extinction_ratio_dB / 20)
            modulated_laser_x = (1 - er) * modulated_laser_signal.iq[0] + er * laser.iq[
                0
            ]

Is this the correct behaviour?
This is what I want to know. I expected something along the lines of

class MZM:
    def output(self, laser, drive):
        if np.isfinite(self.extinction_ratio_dB):
            er = 10 ** (-self.extinction_ratio_dB / 20)
            modulated_laser_x = (
                (1 - er) * modulated_laser_signal.iq[0] 
                + er * laser.iq[0]
             )

To Reproduce Steps to reproduce the behavior:

1. Take the first snippet above
2. Run Black on it either without arguments or with these arguments: -t py36
3. See the result in the second snippet above

Expected behavior A clear and concise description of what you expected to happen.

Environment (please complete the following information):

• Version: 19.10b0
• OS and Python version: Windows 10/Python 3.7.4

Does this bug also happen on master?
Yes, see this

[JelleZijlstra]

Duplicate of #236