Hi, I need to know what is dictionary in python
Maybe you need to know how to ask meaningful questions.
See the official documentation on dictioraries:
It is best to think of a dictionary as a set of key: value pairs, with the requirement that the keys are unique (within one dictionary). A pair of braces creates an empty dictionary:
{}
. Placing a comma-separated list of key:value pairs within the braces adds initial key:value pairs to the dictionary; this is also the way dictionaries are written on output.