python copy instance
import copy
class A(object):
def __init__(self, a)
self.a = a
a = A(38)
# Deepcopy
a2 = copy.deepcopy(a)
# Shallow copy -> use this if copy.deepcopy() fails
a3 = copy.copy(a)python copy instance
import copy
class A(object):
def __init__(self, a)
self.a = a
a = A(38)
# Deepcopy
a2 = copy.deepcopy(a)
# Shallow copy -> use this if copy.deepcopy() fails
a3 = copy.copy(a)python deepcopy
>>> import copy
>>> nums = [1, 2, 3]
>>> data = {'a': 10, 'b': nums}
>>> data
{'a': 10, 'b': [1, 2, 3]}
>>> data_copy = copy.copy(data)
>>> data_deep = copy.deepcopy(data)
>>> data_copy
{'a': 10, 'b': [1, 2, 3]}
>>> data_deep
{'a': 10, 'b': [1, 2, 3]}
>>> data_copy['a'] += 2
>>> nums[1:1] = [254]
>>> data
{'a': 10, 'b': [1, 254, 2, 3]}
>>> data_copy
{'a': 12, 'b': [1, 254, 2, 3]}
>>> data_deep
{'a': 10, 'b': [1, 2, 3]}Copyright © 2021 Codeinu
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