Definitions and methods of operation set .py day16-

! # / User / bin / Python the env 
# - * - Coding: UTF-. 8 - * - 
# string 
# number 
# tuples 
# listing 
# Dictionary 
# variable: a list of dictionary 
# immutable: strings, numbers, element group 
# access sequence: 
# direct access; digital 
# sequential access; strings, lists, tuples 
# mapping; Dictionary 
# number of elements stored 
# container type: strings, lists, tuples 
  # atoms: number, string 

# collection disorderly 
# different elements 
# collection must be immutable type 
S = {1,2,2, "Hello", 'World', 'Alex', 'Alex'} 
Print (type (S), S) 
I in S for: 
    Print (I) 

# collection must be immutable 
# S = {[l, 2,3],. 1} 
# Print (S) 

S = sET ( 'Hello') 
Print (S) 

S = SET ([ 'Alex', 'Alex', 'SB']) 
Print (S) 

# Add the Add 
S = {1,2,3,4,5,6} 
S.add(3)
s.add ( '. 3') 
Print (S) 

# Clear Clear 
s.clear () 
Print (S) 

# Copy 
S = {1,2,3,4} 
S1 = s.copy () 
Print (S1) 

# POP random puncturing 
S = { 'SD', 1,2,3,4, 'S'} 
s.pop () 
Print (S) 

# remove the specified delete, delete elements being given the absence of 
s = { 'sd', 1 , 2,3,4, 'S'} 
s.remove ( 'SD') 
Print (S) 

# discard, specify delete, delete elements not being given the absence of 
s = { 'sd', 1,2,3,4 , 'S'} 
s.discard ( 'SD') 
Print (S)