Can someone explain to my why this very simple lambda expression does not work and what exactly is wrong?
In [8]: print_me = lambda x: print x File "<ipython-input-8-269dab9ac1a1>", line 1 print_me = lambda x: print x ^ SyntaxError: invalid syntax but
print_me = lambda x: x does ?
In python 2.X print is a statement not a function. Accordingly, this is not supported by lambda functions. In python 3, however, lambda x: print(x) works since print is a function. You could also try to import the new print functionality in python 2.X:
from __future__ import print_function f = lambda x: print(x) f(4) which prints 4.
