#!/usr/bin/python3
# -*- coding: utf-8 -*-
"""
Preview of functions, modules, packages
"""

# %% Built-in function calls and help in python
# named_block_of_code() is a function call.
# Python3 has many pre-written for you.

"""
#!/bin/bash

pydoc --help

# search for help on topic
pydoc -k topic
"""

help()
help(help)
help(print)
help(int)
help(list)

# quit() quits the python3 interprete,
# which we don't want to actually do right now.
# Skip this line if you want
quit()


# %% Preview of Modules and Packages (more to come later)

# import someone_elses_code
# lets you use code written elsewhere on your computer.

# Don't generally pollute your namespace with this:
from math import *

print(gcd(10, 5))

# do this instead!
from math import gcd

print(gcd(10, 5))

# this is good too.
import math
# This is dot (.) notation:
math.gcd(15, 10)
# It accesses a sub-function of the math module

# Put these import statements at the top of your source code file,
# not somewhere in the middle like this.