CBSE Class 11 Python List

# CBSE Class 11: Python List 6

Concatenation of List using “+” Operator

We can also use + operator to combine two lists. This is also called concatenation.

n = [1, 3, 5]

print(n + [9, 7, 5])

# Output: [1, 3, 5, 9, 7, 5]

We can also use + operator to combine two lists. This is also called concatenation.

n=[1,2,3,4,5]

n1=[6,7,8,9,10]

print(“list n”)

print(n)

print(“list n1”)

print(n1)

print(“n+n1”)

print(n+n1)

#[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

print(n+[10,20,30])

output:

list n

[1, 2, 3, 4, 5]

list n1

[6, 7, 8, 9, 10]

n+n1

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

[1, 2, 3, 4, 5, 10, 20, 30]

Example:1

```n1=[1,2,3,4,5]
n2=[10,20,30,40,50]
print(n1)
print(n2)
print(n1+n2)
print(n2+n1)```

Output:

[1, 2, 3, 4, 5]
[10, 20, 30, 40, 50]
[1, 2, 3, 4, 5, 10, 20, 30, 40, 50]
[10, 20, 30, 40, 50, 1, 2, 3, 4, 5]

Repeating or Replicating Lists

Operator “*” helps us to replicate a list specified number of times.

Example:

n=[1,2,3]
print(n)
print(n*2)
print(n*3)

Output:
[1, 2, 3]
[1, 2, 3, 1, 2, 3]
[1, 2, 3, 1, 2, 3, 1, 2, 3]

```n=[1,2,3]
print(n)
print(n*2)
print(n*3)```

Output:

[1, 2, 3]
[1, 2, 3, 1, 2, 3]
[1, 2, 3, 1, 2, 3, 1, 2, 3]

Example:

n=[‘a’,’b’,’c’]
print(n)
print(n*2)
print(n*3)

Output:

[‘a’, ‘b’, ‘c’]
[‘a’, ‘b’, ‘c’, ‘a’, ‘b’, ‘c’]
[‘a’, ‘b’, ‘c’, ‘a’, ‘b’, ‘c’, ‘a’, ‘b’, ‘c’]

```n=['a','b','c']
print(n)
print(n*2)
print(n*3)
```

Output:

[‘a’, ‘b’, ‘c’]
[‘a’, ‘b’, ‘c’, ‘a’, ‘b’, ‘c’]
[‘a’, ‘b’, ‘c’, ‘a’, ‘b’, ‘c’, ‘a’, ‘b’, ‘c’]

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