Help!

Maybe you already know the name of a Python function, but you still have to figure out how to use it. Ironically, you have to ask for information about a function with another function: help(). In IPython specifically, you can also use ? before the function name.

To get help on the max() function, for example, you can use one of these calls:

help(max)
?max

Use the IPython Shell to open up the documentation on pow(). Which of the following statements is true?

Possible Answers

pow() takes three arguments: base, exp, and mod. If you don't specify mod, the function will return an error.
pow() takes three arguments: base, exp, and None. All of these arguments are required.
pow() takes three arguments: base, exp, and mod. base and exp are required arguments, mod is an optional argument.
pow() takes two arguments: exp and mod. If you don't specify exp, the function will return an error.

Exercise

Help!

Instructions

Possible Answers