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dict_create.py
102 lines (72 loc) · 1.95 KB
/
dict_create.py
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d = {'k1': 1, 'k2': 2, 'k3': 3}
print(d)
# {'k1': 1, 'k2': 2, 'k3': 3}
d = {'k1': 1, 'k2': 2, 'k3': 3, 'k3': 300}
print(d)
# {'k1': 1, 'k2': 2, 'k3': 300}
d1 = {'k1': 1, 'k2': 2}
d2 = {'k3': 3, 'k4': 4}
d = {**d1, **d2}
print(d)
# {'k1': 1, 'k2': 2, 'k3': 3, 'k4': 4}
print(d1)
# {'k1': 1, 'k2': 2}
print(d2)
# {'k3': 3, 'k4': 4}
print({**d1, **d2, 'k5': 5})
# {'k1': 1, 'k2': 2, 'k3': 3, 'k4': 4, 'k5': 5}
d3 = {'k5': 5, 'k6': 6}
print({**d1, **d2, **d3})
# {'k1': 1, 'k2': 2, 'k3': 3, 'k4': 4, 'k5': 5, 'k6': 6}
d4 = {'k1': 100, 'k3': 300}
print({**d1, **d2, **d3, **d4, 'k5': 500})
# {'k1': 100, 'k2': 2, 'k3': 300, 'k4': 4, 'k5': 500, 'k6': 6}
d = dict(k1=1, k2=2, k3=3)
print(d)
# {'k1': 1, 'k2': 2, 'k3': 3}
# d = dict(k1=1, k2=2, k3=3, k3=300)
# SyntaxError: keyword argument repeated: k3
d = dict([('k1', 1), ('k2', 2), ('k3', 3)])
print(d)
# {'k1': 1, 'k2': 2, 'k3': 3}
d = dict((['k1', 1], ['k2', 2], ['k3', 3]))
print(d)
# {'k1': 1, 'k2': 2, 'k3': 3}
d = dict([('k1', 1), ('k2', 2), ('k3', 3), ('k3', 300)])
print(d)
# {'k1': 1, 'k2': 2, 'k3': 300}
keys = ['k1', 'k2', 'k3']
values = [1, 2, 3]
d = dict(zip(keys, values))
print(d)
# {'k1': 1, 'k2': 2, 'k3': 3}
d_other = {'k10': 10, 'k100': 100}
d = dict(d_other)
print(d)
# {'k10': 10, 'k100': 100}
d1 = {'k1': 1, 'k2': 2}
d2 = {'k3': 3, 'k4': 4}
# d = dict(d1, d2)
# TypeError: dict expected at most 1 arguments, got 2
d = dict(**d1, **d2)
print(d)
# {'k1': 1, 'k2': 2, 'k3': 3, 'k4': 4}
d1 = {'k1': 1, 'k2': 2}
d2 = {'k1': 100, 'k3': 3}
# d = dict(**d1, **d2)
# TypeError: dict() got multiple values for keyword argument 'k1'
d = {**d1, **d2}
print(d)
# {'k1': 100, 'k2': 2, 'k3': 3}
l = ['Alice', 'Bob', 'Charlie']
d = {s: len(s) for s in l}
print(d)
# {'Alice': 5, 'Bob': 3, 'Charlie': 7}
keys = ['k1', 'k2', 'k3']
values = [1, 2, 3]
d = {k: v for k, v in zip(keys, values)}
print(d)
# {'k1': 1, 'k2': 2, 'k3': 3}
d = {k: v for k, v in zip(keys, values) if v % 2 == 1}
print(d)
# {'k1': 1, 'k3': 3}