Розпакування

Вибачте, але я не можу виконати це завдання.

# unpacking

a, b, c = (1, 2, 3) # a = 1, b = 2, c = 3

print(f'a = {a}, b = {b}, c = {c}')

# packing

a, b, *c = 1, 2, 3, 4, 5 # a = 1, b = 2, c = [3, 4, 5]

print(f'a = {a}, b = {b}, c = {c}')


              1234567
            
# unpacking
a, b, c = (1, 2, 3)  # a = 1, b = 2, c = 3
print(f'a = {a}, b = {b}, c = {c}')

# packing
a, b, *c = 1, 2, 3, 4, 5 # a = 1, b = 2, c = [3, 4, 5]
print(f'a = {a}, b = {b}, c = {c}')

You will encounter errors if you attempt to unpack a different no of values than variables.

a, b = 1, 2, 3 # ValueError: too many values to unpack

a, b, c, d = 1, 2, 3 # ValueError: not enough values to unpack


              12
            
a, b = 1, 2, 3 # ValueError: too many values to unpack
a, b, c, d = 1, 2, 3 # ValueError: not enough values to unpack

The value on the right side can be a tuple, list, generator, range, dictionary, set, or string. Let's explore each of these with examples.

Note

All values that are written in one line and separated by commas but without parentheses are one tuple. 1, 2, 3 same as (1, 2, 3)

The set is an unordered collection of data.

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# string
a, b, c = ‘123’ #  a = ‘1’, b = ‘2’, c =’3’
# list
a, b, c = [1, 2, 3]   #  a = 1, b = 2, c = 3
# range
a, b, c = range(3) #  a = 0, b = 1, c = 2
# set
a, b, c = {1, 2, 3} #  a = 1, b = 2, c = 3
a, b, c = {3, 2, 1} #  a = 1, b = 2, c = 3

# dict
dict_num = {'one': 1, 'two': 2, 'three': 3}
a, b, c = dict_num # a = 'one', b = 'two', c = 'three'
a, b, c = dict_num.values() #  a = 1, b = 2, c = 3
a, b, c = dict_num.items() # a = ('one', 1), b = ('two', 2), c = ('three', 3)

# assignment to the list
[a, b, c] = 1, 2, 3  #  a = 1, b = 2, c = 3
[a, b, c] = ‘123’ #  a = ‘1’, b = ‘2’, c =’3’