﻿ Python: Reverse a given string in lower case - w3resource

# Python: Reverse a given string in lower case

## Python Basic - 1: Exercise-125 with Solution

Write a Python program to reverse a given string in lower case.

Sample Solution-1:

Python Code:

``````def test(str1):
return str1[::-1].lower()
str = "PHP"
print("Original string:",str)
print("Reverse the said string in lower case:",test(str))
str = "JavaScript"
print("\nOriginal string:",str)
print("Reverse the said string in lower case:",test(str))
str = "PHPP"
print("\nOriginal string:",str)
print("Reverse the said string in lower case:",test(str))
``````

Sample Output:

```Original string: PHP
Reverse the said string in lower case: php

Original string: JavaScript
Reverse the said string in lower case: tpircsavaj

Original string: PHPP
Reverse the said string in lower case: pphp
```

Flowchart:

Sample Solution-2:

Python Code:

``````def test(str1):
return str1.lower()[::-1]

str = "PHP"
print("Original string:",str)
print("Reverse the said string in lower case:",test(str))
str = "JavaScript"
print("\nOriginal string:",str)
print("Reverse the said string in lower case:",test(str))
str = "PHPP"
print("\nOriginal string:",str)
print("Reverse the said string in lower case:",test(str))
``````

Sample Output:

```Original string: PHP
Reverse the said string in lower case: php

Original string: JavaScript
Reverse the said string in lower case: tpircsavaj

Original string: PHPP
Reverse the said string in lower case: pphp
```

Flowchart:

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