Python loop through a tuple

In Python when we loop through a tuple using 'for' loop, we can fetch each element of a tuple with each iteration. Consider the following to know more.

Loop through a tuple with 'for' loop

The 'for' loop in Python is different form the 'for' loop in the other programming languages.

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In Python, the 'for' loop does not require any update to be done. It automatically update after each iteration.

Python 'for' loop syntax

for variable in tuple_name:

    statements

Example

Input

a = (1, 2, 3, 4, 5)

for i in a:

    print(i)

Output

1
2
3
4
5

'for' loop over tuple with range() method

Loop over a tuple, like above can be done with the range() method.

Program

Input

a = (1, 2, 3, 4, 5)

length = len(a)

for i in range(0, length):

    print(a[i])

Output

1
2
3
4
5

In looping over a tuple, range() method gives us the flexibility to select the particular range in tuple.

Program

Input

b = (1, 2, 3, 4, 5, 6, 7, 8, 9)

for j in range(2, 5):

    print(b[j])

Output

3
4
5

Interval can be introduced while looping over a  tuple with the range() method.

Program

Input

b = (1, 2, 3, 4, 5, 6, 7, 8, 9)

length = len(b)

for step in range(0, length, 2):

    print(b[step])

Output

1

3

5

7

9

'for' loop over tuple with enumerate() method

The enumerate() method enumerates the tuple, with numbers.

Following is an example to enumerate the tuple.

Program

>>> b = (1, 2, 3, 4, 5, 6, 7, 8, 9)

>>> list(enumerate(b))

[(0, 1), (1, 2), (2, 3), (3, 4), (4, 5), (5, 6), (6, 7), (7, 8), (8, 9)]

Here is an example, how you can fetch the content, got after enumerating the tuple. Both, tuple value and the enumerated value.

Program

Input

b = (1, 2, 3, 4, 5, 6, 7, 8, 9)
for i, j in list(enumerate(b)):
    print("Index: ", i, " Value: ", j)

Output

Index:  0  Value:  1

Index:  1  Value:  2

Index:  2  Value:  3

Index:  3  Value:  4

Index:  4  Value:  5

Index:  5  Value:  6

Index:  6  Value:  7

Index:  7  Value:  8

Index:  8  Value:  9

Conclusion

Here we have learned, how we can loop through a tuple with 'for' loop and also looping through an enumerated tuple.

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