Question 22 (Interview-Level):
Explain the difference between
Options:
A) Both modify the original list
B)
C) Shallow copy affects nested objects, deepcopy doesn't
D)
#Python #Interview #DeepCopy #MemoryManagement
✅ By: https://t.iss.one/DataScienceQ
Explain the difference between
deepcopy
and regular assignment (=
) in Python with a practical example. Then modify the example to show how deepcopy
solves the problem. import copy
# Original Problem
original = [[1, 2], [3, 4]]
shallow_copy = original.copy()
shallow_copy[0][0] = 99
print(original) # What happens here?
# Solution with deepcopy
deep_copied = copy.deepcopy(original)
deep_copied[1][0] = 77
print(original) # What happens now?
Options:
A) Both modify the original list
B)
copy()
creates fully independent copies C) Shallow copy affects nested objects, deepcopy doesn't
D)
deepcopy
is slower but creates true copies #Python #Interview #DeepCopy #MemoryManagement
✅ By: https://t.iss.one/DataScienceQ
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What types of file objects are there?
Answer:
All these types implement interfaces from io — io.TextIOBase, io.BufferedIOBase, and io.RawIOBase. The standard open() function under the hood returns the appropriate object depending on the mode.
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What is a hash table and where is it used in Python?
Answer:
In Python, the built-in dict and set structures are implemented based on hash tables:
Important: the key must be hashable — that is, have an immutable hash and a consistent implementation of __hash__() and __eq__().
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Why is
None
a singleton
object in Python?Answer:
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