Comprehensions

# list, set, dictionary

#mylist=[param for param in interables]

print("List Comprehension!")

aa = '12'

mylist=[a for a in 'hello']

print(mylist)

mylist=[a for a in range(int(aa))]

print(mylist)

mylist=[a*a for a in range(int(aa))]

print(mylist)

mylist=[a*a for a in range(int(aa)) if a*a%2==1]

print(mylist)

print ('- - - - - - - - - - - - - - - - - - - - - - -')

print("set Comprehension!")

aa = '12'

mylist={a for a in 'hello'}

print(mylist)

mylist={a for a in range(int(aa))}

print(mylist)

mylist={a*a for a in range(int(aa))}

print(mylist)

mylist={a*a for a in range(int(aa)) if a*a%2==1}

print(mylist)

print ('- - - - - - - - - - - - - - - - - - - - - - -')

print("dictionary Comprehension!")

simple_dict = {

'a':5,

'b':6,

'd':'h',

'r':'20'

}

mydiction = {key:int(value)**2 for key, value in simple_dict.items() if str(value).isnumeric() if int(value)%2==0 }

print(mydiction)

print ('- - - - - - - - - - - - - - - - - - - - - - -')

mainlist=['a','b','c','d','b','n','n','c']

duplicatelist=[]

for value in mainlist:

count = mainlist.count(value)

if count > 1 and value not in duplicatelist:

duplicatelist.append(value)

print(duplicatelist)

duplicatelist = {value for value in mainlist if mainlist.count(value) > 1}

print(duplicatelist)

duplicatelist = [value for value in mainlist if mainlist.count(value) > 1]

print(list(set(duplicatelist)))