DEMO. Загадки

a = b = c = d = 2
 
c == ???

a = 1
b = "football"
 
b == ???

a = 1
b = 2
football = "soccer"
 
football == ???

a = 1
b = 2
 
b, a = a, b
 
a == ????

a = 1
b = 2
football = ""
a = 2
b = 1
 
a == ???

c = []
 
c == ???

c = [None, None, None]
 
c[0] = "football"
c[1] = "basketball"
c[2] = "tennis"
 
c[0] == ???

c = [None, None, None]
d = {}
 
c[0] = d[0] = "football"
c[1] = d[1] = "basketball"
c[2] = d[2] = "tennis"
 
d[2] == ???
c[1] == ???

c = []
d = { 0: "football", 1: "basketball", 2: "tennis" }
 
c.append(d[0])
c.append(d[1])
c.append(d[2])
 
c[0] == ???

уважно!

c = []
d = { 0: "football", 1: "basketball", 2: "tennis" }
 
c.append(d[2])
c.append(d[1])
c.append(d[0])
 
c[0] == ???

Comprehensions

list1 = ["football", "basketball", "tennis", "MMA"]
 
new_list1 = [x for x in list1]
print(new_list1[0])   # Output: football
print(new_list1[1])   # Output: basketball
 
new_list1[2] == ???

list2 = [99, 88, 77, 66, 55, 44, 33, 22, 11]
 
new_list2 = [bla for bla in list2]
print(new_list2[0])   # Output: 99
print(new_list2[1])   # Output: 88
 
new_list2[3] == ???

print()  # Output:
x = ['N', 'A', 'T', 'A', 'S', 'H', 'A', '!']
 
natasha = [letter for letter in x]
 
natasha[7] == ???

#
list4 = [7, 1, 20, 3]
print(len(list4))   # Output: 4
 
new_list4 = [x for x in list4]
 
len(new_list4) == ???

#
lst = [7, 1, 20, 3]
print(len(lst))   # Output: 4
 
new_lst = [x for x in lst if x > 5]
 
len(new_lst) == ???

#
natasha = ['N', 'A', 'T', 'A', 'S', 'H', 'A']
 
print(len(natasha))  # Output: 7
#
len([x for x in natasha if x == 'N']) == ??
len([x for x in natasha if x == 'A']) == ???