#21.12.19

>>> 2 * 2
4
>>> 50 - 5 * 6
20
>>> (50 - 5 * 6) / 4
5.0
>>> round(5.0)
5
>>> 5.123456
5.123456
>>> round(5.123456)
5
>>> round(5.123456,2)
5.12
>>> 17 / 3
5.666666666666667
>>> 17 // 3
5
>>> 18 // 4
4
>>> 20 // 5
4
>>> 17 % 3
2
>>> 17 * 4 % 3
2
a = 1
a(variable) = (assign) 1 (value)
 width = 20
 height = 5 * 9
 vol = width * height
 vol

 sale = 30000
 tax = 5 / 100
 total_tax = sale * tax
 total_tax
 total_sale = sale + total_tax
 total_sale

 >>> 'spam'
'spam'
>>> 'doesn\'t'
"doesn't"
>>> "doesn't"
"doesn't"
>>> '"Yes", they said.'
'"Yes", they said.'
>>> "\"Yes\", they said."
'"Yes", they said.'
>>> '"Isn\'t," they said.'
'"Isn\'t," they said.'

# \n = new line

>>> s = 'First line.\nSecond Line.'
>>> print(s)
First line.
Second Line.

print("""\
Usage: thingy


		-a
		-b
		-c
""")

"""...""" or '''...''' 

3 * 'A'
2 * 'BC' + 'DE'
3 * 'GH' + 3     # can't SUM int and srtring

word = 'Programming'
word[0]
word[5]
word[3:5]
word[4:9]
word[:5]
word[8:]
word[5:-3]
word[:2] + word[3:]

>>>list
