I have y values in the range of -100 to 100.
I want that the negative values are shown as positive (the minus gets removed
from the output).
I tried a for loop over all self.ax.get_yticklabels() and call
label.set_text("...") on each item but it didn't work - nothing got changed.
If I print the label in the loop they seem to be empty:
Is there anything I do wrong?