python pow()とmath.pow()関数

1』内蔵関数pow()

>>> help(pow)
Help on built-in function pow in module __builtin__:
pow(...)
    pow(x, y[, z]) -> number
    With two arguments, equivalent to x**y.  With three arguments,
    equivalent to (x**y) % z, but may be more efficient (e.g. for longs).
>>> 
>>> pow(3,2)  # 3**2
9
>>> pow(3,2,4)# (3**2)%4
1

2》math.pow()

>>> import math
>>> help(math.pow)
Help on built-in function pow in module math:
pow(...)
    pow(x, y)
    Return x**y (x to the power of y).
>>> math.pow(3,2)
9.0
>>>