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sets.py
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sets.py
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# #PYTHON SETS
# s1={1,2,3,'a','b',4,1,2,'a',3,10}
# print(s1)
# #print(s1[0]) Error
# #SETS ARE MUTABLE
# s1.add((10,20))
# print(s1)
# s1.remove('a')
# print(s1)
# s2=set()
# s3={}
# print(type(s3),type(s2))
# #str => set
# s4=set('hellooooooo!!!')
# print(s4)
# #tuple => set
# s5=set((1,2,3,4,4,'abc'))
# print(s5)
# #list => set
# l2=[10,20,30,40]
# print(set(l2))
# macs=['10-3D-1C-FC-9D-D8','10-3D-1C-FC-9D-D8','10-3D-1C-FC-9D-90','10-3D-1C-FC-9D-D8','10-3D-1C-FC-9D-D8']
# mac_addresses = set(macs)
# print(mac_addresses)
# print(len(mac_addresses))
# print(list(mac_addresses))
# for item in s4:
# print(item)
#
# print('x' in s4)
# set1={1,2,3}
# set2={2,3,1}
# print(set1 == set2)
# print(set1 is set2)
#SET METHODS
#1. set.add()
# s1={1,2,3}
# s1.add('a')
# s1.add(4.5)
# print(s1)
# #2. set.remove(item)
# s1.remove(3)
# #s1.remove(3) error
# print(s1)
# #3. set.discard(item)
# s1.discard('a')
# print(s1)
# s1.discard('x') #not error
# #4.set.pop
# x=s1.pop()
# print(x,s1)
# s2=set('abc')
# s3=s2
# s3.add('x')
# print(s2)
# #5.set.clear()
# s3.clear()
# print(f's2: {s2}, s3:{s3}')
# #6 set.copy()
# s4=s1.copy()
# s4.add('z')
# print(f's4: {s4}, s1:{s1}')
#SET METHODS PART2
# set1={1,3,5,9}
# set2={5,7,9}
# #1. set.intersection()
# set3=set1.intersection(set2)
# print(set3)
# set3=set1 & set2
# print(set3)
# #2. set.difference()
# set4 = set1.difference(set2)
# print(f'set4: {set4}')
# set4= set1-set2
# print(f'set4: {set4}')
# set4=set1.difference([1,2,3,4,5])
# print(f'set4: {set4}')
# #3. set.symmetric_difference()
# set5=set1.symmetric_difference(set2)
# print(f'set5: {set5}')
# set5=set1 ^ set2
# print(f'set5: {set5}')
# #4 set.union()
# set6=set1.union(set2)
# print(f'set6: {set6}')
# set6=set1| set2
# print(f'set6: {set6}')
# #5 set.isdisjoint()
# s1={1,3,5}
# s2={5,6,7}
# print(s1.isdisjoint(s2))
# s3={8,9}
# print(s1.isdisjoint(s3))
# #<,<=,>,>=
# print({1,3}<{1,2,3,4})
#PYTHON FROZENSETS
# fs1=frozenset({1,2,3,'a','b'})
# print(fs1,type(fs1))
# s1='Python is cool!!'
# fs2=frozenset(s1)
# print(fs2)
# fs3=frozenset()
# fs1=frozenset([1,2,3,4])
# fs2=frozenset([3,4,5,6])
# fs3=fs1.intersection(fs2)
# print(fs3)
# s1={4,10,20}
# result1=s1.intersection(fs1)
# result2=fs1-s1
# print(f'result1 type: {type(result1)}') #set
# print(f'result2 type: {type(result2)}') #frozenset
#####DICTIONARIES IN PYTHON
# person= {'name':'John', 'age':30,(1,2,3):100,'age':30}
# print(type(person))
# d1=dict()
# #d2={}
# print(len(person))
# person['name']='Dan'
# print(person)
# person['location']='Berlin'
# print(person)
# a=person['age']
# print(a)
# value = person.get('name','Key does not exist')
# calue =person.get('nam','Key does not exist')
# print(value)
# print(calue)
# name=person.pop('name')
# print(name,person)
# print(person.popitem())
# del person['age']
# print(person)
# germany = {
# 'cities':['Hamburg','Berlin','Munich'],
# 'info': {'population':83_000_000, 'people':['Einstein','bach','Guss']}
# }
# print(germany['cities'])
# print(germany['cities'][1])
# print(germany['info']['people'][-1])
#DICTIONARY OPERATIONS AMD METHODS
# person ={'name': 'john', 'age':30,'location':'USA'}
# friend=person
# person['name']='Peter'
# print(friend)
# neighbor= person.copy()
# person['location']='Europe'
# print(neighbor,person)
# countries={'ro':'Romania','us':'United States of America','de':'Germany'}
# countries.update({'hu':'Hungary','fr':'France'})
# print(countries)
# person.clear()
# print(person)
#dict keys
# person ={'name': 'john', 'age':30,'location':'USA'}
# k=person.keys()
# print(k)
# print(type(k))
# my_keys=list(k)
# print(my_keys)
# print(person.values())
# print(list(person.values()))
# #dict.items
# print(person.items())
# print('name' in person)
# print(10 in person.keys()) #same
# print('USA' in person.values())
# print(('age',30) in person.items())
# d1={10:'a',20:'b',30:'c'}
# v=d1.values()
# d1[10]='X'
# print(v)
# d1={10:'a',20:'b'}
# d2={20:'c',30:'c'}
# k1=d1.keys()
# k2=d2.keys()
# print(k1,k2)
# print(k1 & k2)
# print(k1 | k2)
# for k in person:
# print(f'ket is {k}')
# for k in person.keys():
# print(f'ket is {k}')
# for v in person.values():
# print(f'value is {v}')
# for k in person.keys():
# print(f'key is {k} and value is {person[k]}')
# for k,v in person.items():
# print(f'key is {k} and values is {v}')
#Set and Dict Comprehensions
names = {'tom','AANNE','John','dAn'}
names={n.capitalize() for n in names}
print(names)
d1={'a':1, 'b':2, 'c':3}
d2={k*2:v*2 for k,v in d1.items()}
print(d2)
d3={k.upper(): v*2 for k,v in d1.items() if v%3==0}
print(d3)
years=[2017,2018,2019]
revenues=[30000,40000,50000]
z=zip(years,revenues)
sales=list(z)
print(sales)
my_sales=dict(zip(years,revenues))
print(my_sales)
profit={k:v*0.15 for k,v in my_sales.items()}
print(profit)