﻿ Python: Reverse all the words which have odd length - w3resource

# Python: Reverse all the words which have odd length

## Python Basic - 1: Exercise-136 with Solution

Write a Python program to reverse all the words which have odd length.

Sample Solution-1:

Python Code:

``````def test(txt):
return ' '.join(i[::-1] if len(i)%2 else i for i in txt.split())

text = "The quick brown fox jumps over the lazy dog"
print("Original string:")
print(text)
print("Reverse all the words of the said string which have odd length:")
print(test(text))
text = "Python Exercises"
print("\nOriginal string:")
print(text)
print("Reverse all the words of the said string which have odd length:")
print(test(text))
``````

Sample Output:

```Original string:
The quick brown fox jumps over the lazy dog
Reverse all the words of the said string which have odd length:
ehT kciuq nworb xof spmuj over eht lazy god

Original string:
Python Exercises
Reverse all the words of the said string which have odd length:
Python sesicrexE
```

Flowchart:

## Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:

Sample Solution-2:

Python Code:

``````def test(text):
result = list(text.split(' '))
for i in range(len(result)):
if len(result[i]) % 2 == 1:
result[i] = result[i][::-1]
return ' '.join(result)

text = "The quick brown fox jumps over the lazy dog"
print("Original string:")
print(text)
print("Reverse all the words of the said string which have odd length:")
print(test(text))
text = "Python Exercises"
print("\nOriginal string:")
print(text)
print("Reverse all the words of the said string which have odd length:")
print(test(text))
``````

Sample Output:

```Original string:
The quick brown fox jumps over the lazy dog
Reverse all the words of the said string which have odd length:
ehT kciuq nworb xof spmuj over eht lazy god

Original string:
Python Exercises
Reverse all the words of the said string which have odd length:
Python sesicrexE
```

Flowchart:

## Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:

Python Code Editor:

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## Python: Tips of the Day

Iterating over dictionaries using 'for' loops:

I am a bit puzzled by the following code: d = {'x': 1, 'y': 2, 'z': 3} for key in d: print key, 'corresponds to', d[key] What I don't understand is the key portion. How does Python recognize ...

key is just a variable name.

```for key in d:
```

For Python 3.x:

```for key, value in d.items():
```

For Python 2.x:

```for key, value in d.iteritems():
```

To test for yourself, change the word key to poop.

In Python 3.x, iteritems() was replaced with simply items(), which returns a set-like view backed by the dict, like iteritems() but even better. This is also available in 2.7 as viewitems().

The operation items() will work for both 2 and 3, but in 2 it will return a list of the dictionary's (key, value) pairs, which will not reflect changes to the dict that happen after the items() call. If you want the 2.x behavior in 3.x, you can call list(d.items()).

Ref: https://bit.ly/37dm0Qo