调用成员函数并在python中使用map函数传递参数

Question

Based on what I see in this post, I tried to write this piece of code but it gives me error.

ticklabels = ax.get_xticklabels()
set_color = operator.methodcaller('set_color("b")')
ticklabels[0].set_color('b') # this runs fine
map(set_color, ticklabels)   #error is here

Error code:

map(set_color, ticklabels) AttributeError: 'Text' object has no attribute 'set_color("b")'

Can't you pass argument to the function in methodcaller?

Answer 1

I think you need:

set_color = operator.methodcaller('set_color', 'b')

The first argument is the method to be called, subsequent arguments will be passed to the method when it is called.

You can then test it works by doing:

set_color(ticklabels[0])