﻿ Python: Remove duplicate words from a given string - w3resource

# Python: Remove duplicate words from a given string

## Python String: Exercise-90 with Solution

Write a Python program to remove duplicate words from a given string.

Sample Solution:-

Python Code:

``````def unique_list(text_str):
l = text_str.split()
temp = []
for x in l:
if x not in temp:
temp.append(x)
return ' '.join(temp)

text_str = "Python Exercises Practice Solution Exercises"
print("Original String:")
print(text_str)
print("\nAfter removing duplicate words from the said string:")
print(unique_list(text_str))
```
```

Sample Output:

```Original String:
Python Exercises Practice Solution Exercises

After removing duplicate words from the said string:
Python Exercises Practice Solution
```

Flowchart:

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Python Code Editor:

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## Python: Tips of the Day

Check if a given key already exists in a dictionary:

In is the intended way to test for the existence of a key in a dict.

```d = {"key1": 10, "key2": 23}

if "key1" in d:
print("this will execute")

if "nonexistent key" in d:
print("this will not")
```

If you wanted a default, you can always use dict.get():

```d = dict()

for i in range(100):
key = i % 10
d[key] = d.get(key, 0) + 1
```

and if you wanted to always ensure a default value for any key you can either use dict.setdefault() repeatedly or defaultdict from the collections module, like so:

```from collections import defaultdict

d = defaultdict(int)

for i in range(100):
d[i % 10] += 1
```

but in general, the in keyword is the best way to do it.

Ref: https://bit.ly/2XPMRyz