gistfile1.txt

import cProfile

cProfile.run("""
f = lambda x: x*2
for i in xrange(10000000):
    f(i)
""")

cProfile.run("""
f = lambda x: x*2
[f(i) for i in xrange(10000000)]
""")

cProfile.run("""
f = lambda x: x*2
map(f, xrange(10000000))
""")

gistfile2.txt

x$ python temp1.py
         10000002 function calls in 2.087 seconds

   Ordered by: standard name

   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
 10000000    0.647    0.000    0.647    0.000 <string>:2(<lambda>)
        1    1.440    1.440    2.087    2.087 <string>:2(<module>)
        1    0.000    0.000    0.000    0.000 {method 'disable' of '_lsprof.Profiler' objects}


         10000002 function calls in 2.214 seconds

   Ordered by: standard name

   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
 10000000    0.651    0.000    0.651    0.000 <string>:2(<lambda>)
        1    1.562    1.562    2.214    2.214 <string>:2(<module>)
        1    0.000    0.000    0.000    0.000 {method 'disable' of '_lsprof.Profiler' objects}


         10000003 function calls in 1.876 seconds

   Ordered by: standard name

   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
 10000000    0.697    0.000    0.697    0.000 <string>:2(<lambda>)
        1    0.058    0.058    1.876    1.876 <string>:2(<module>)
        1    1.122    1.122    1.818    1.818 {map}
        1    0.000    0.000    0.000    0.000 {method 'disable' of '_lsprof.Profiler' objects}