Python · Theory

List vs Tuple in Python

Theory

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List vs Tuple in Python

Both are ordered sequences. The big difference is mutability. List can change: append, pop, names[0] = "Asha". Tuple cannot. [] vs (). Tuple can be a dict key if its items are hashable; a list cannot. Pick list when you will edit. Pick tuple when the data should stay fixed — coordinates, RGB, a row you don’t want anyone to append to.

Lead the viva with mutable vs immutable, then one use each. Don’t start with “tuple is faster” unless they ask — intent matters more for freshers.

List vs Tuple in Python — output — [1, 2, 3] then (1, 2). List grew; tuple stayed.

Diagram

point = (3, 4)   immutable
     x=3     y=4

Exam tip

Mutability first; then dict-key use case.

Example

# List vs tuple
a = [1, 2]
a.append(3)
b = (1, 2)
print(a)
print(b)

List vs Tuple in Python — output: [1, 2, 3] then (1, 2). List grew; tuple stayed.

Short notes

DefList mutable. Tuple immutable.
Rule[] vs ()
RememberTuple can be dict key

Python · Theory

List vs Tuple in Python

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Theory

34/268

List vs Tuple in Python

Lead the viva with mutable vs immutable, then one use each. Don’t start with “tuple is faster” unless they ask — intent matters more for freshers.

List vs Tuple in Python — output — [1, 2, 3] then (1, 2). List grew; tuple stayed.

Diagram

point = (3, 4)   immutable
     x=3     y=4

Exam tip

Mutability first; then dict-key use case.

Example

# List vs tuple
a = [1, 2]
a.append(3)
b = (1, 2)
print(a)
print(b)

List vs Tuple in Python — output: [1, 2, 3] then (1, 2). List grew; tuple stayed.

Short notes

DefList mutable. Tuple immutable.
Rule[] vs ()
RememberTuple can be dict key

List vs Tuple in Python

Example

Short notes

Questions

List vs Tuple in Python

Example

Short notes

Questions