index

mutable, dictionary can be modified.

Dicitonary is a collection of key value pairs, for example: {‘a’:1,’b’:2,’c’:3}

Dicitonary keys is a sequence, iterable

d={‘a’:1,’b’:2,’c’:3}

for i in d.keys():

print\(i\)

d[‘a’] is 1, d[‘b’] is 2, d[‘c’] is 3

Convert to List, use function dict()

d=dict(a=1,b=2,c=3)

Above is the same as

d={‘a’:1,’b’:2,’c’:3}

Dictionary is an object, meaning it has methods and attributes that can be invoked

To see all methods, type

help(<dictionary variable>)

In Jupyter notebook, to see list of methods or attributes

Press shift key after enter <tuple variable>.