Right-aligned python

a.py

import re

python_regex = re.compile(r"^(.*?)(\s*)$")

from IPython.core.magic import register_cell_magic, cell_magic, magics_class, Magics

@magics_class
class RightAlignMagics(Magics):
    @cell_magic
    def right_align(self, line, cell):
        cell = "\n".join([
                python_regex.sub(r"\2\1", l)
                for l in cell.split("\n")
            ])
        self.shell.run_cell(cell)
get_ipython().register_magics(RightAlignMagics)

b.py

%%right_align
for x in xrange(50):
out = []  
if x % 7 == 0:  
out.append("Fizz")    
if x % 5 == 0:  
out.append("Buzz")    
if not out:  
out = str(x)    
print out