Python Full stack Development study notes-03. The Third day

Set

Define set ([1,2,3,4])

{1,2,3,4}

Key values are not repeatable

Ternary operators

if Else value2

Depth copy

Import"123"# shallow copy  # deep copy 

Summarize:

1. The depth copy does not copy the STR and the numbers, using the same area of memory.

2. For list, dict,tuple copy, shallow copy only copy first layer. Deep copy copies all layers, and the last layer does not copy when it encounters a string or a number.

Function programming

Python Full stack Development study notes-03. The Third day