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Python: Strip a set of characters from a string

Python String: Exercise-41 with Solution

Write a Python program to strip a set of characters from a string.

Python String Exercises: Strip a set of characters from a string

Sample Solution:-

Python Code:

def strip_chars(str, chars):
    return "".join(c for c in str if c not in chars)

print("\nOriginal String: ")
print("The quick brown fox jumps over the lazy dog.")
print("After stripping a,e,i,o,u")      
print(strip_chars("The quick brown fox jumps over the lazy dog.", "aeiou"))
print()

Sample Output:

Original String:                                                                                              
The quick brown fox jumps over the lazy dog.                                                                  
After stripping a,e,i,o,u                                                                                     
Th qck brwn fx jmps vr th lzy dg.                             

Flowchart:

Flowchart: Strip a set of characters from a string

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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