>>> def p(x): print(x)
...  
>>> f = lambda x:p(x) 
>>> f(5) 
5
>>> f = lambda x:print(x)
  File "<stdin>", line 1
    f = lambda x:print(x)
                     ^
SyntaxError: invalid syntax


>>> def counter(x):
...     base = x
...     def inc():
...             oldbase = base
...             base = base + 1
...             return oldbase
...     return inc
... 
>>> c = counter(5)
>>> c()
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "<stdin>", line 4, in inc
UnboundLocalError: local variable 'base' referenced before assignment