gistfile1.py

class Test(object):
    def something(self, x):
        seg = str(x)
        self.seg_button = Button(lambda: self.something_else(seg))
        
    
    def something_else(self, seg):
        print('string' + seg)

        
class Button(object):
    def __init__(self, command):
        self.command = command
    
    def push(self):
        self.command()