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Lekcja – Funkcje pracujące na listach

 
l = [1,2,3]
l

i = l.__iter__()
i

print(i.__next__())
print(i.__next__())
print(i.__next__())

i.__next__()

for n in l:
   print(n)

list(map(lambda x: x.upper(), ['cat', 'dog', 'cow']))

list(filter(lambda x: 'o' in x, ['cat', 'dog', 'cow']))

from functools import reduce

numbers = [11,22,33,1]

reduce(lambda x,y: x if x > y else y, numbers)

ids = ['id1', 'id2', 'id30', 'id3', 'id22', 'id100']
ids

sorted(ids)

sorted(ids, key=lambda x: int(x[2:]))

from heapq import nsmallest, nlargest

nlargest(3, ids, key=lambda x: int(x[2:]))

nsmallest(3, ids, key=lambda x: int(x[2:]))

Rozwiązanie:

 
numbers = [1,45,672,7265,16]
sorted_numbers = sorted(numbers, key=lambda x: x % 10)
print(sorted_numbers)

from functools import reduce

codes = ['JPID', 'JJJPPP', 'XXX', 'JDU']
print(reduce(lambda a, b: a if len(a) > len(b) else b, codes))

capitals =['Rome', 'Paris', 'Madrid']
cities = ['Rome', 'Napoli', 'Rimini', 'Paris', 'Barcelona', 'Madrid', 'Marceille']

print(list(filter(lambda c: c not in capitals, cities)))