Python: Remove unwanted characters from a given string
Python String: Exercise-89 with Solution
Write a Python program to remove unwanted characters from a given string.
Sample Solution:-
Python Code:
def remove_chars(str1, unwanted_chars):
for i in unwanted_chars:
str1 = str1.replace(i, '')
return str1
str1 = "Pyth*^on Exercis^es"
str2 = "A%^!B#*CD"
unwanted_chars = ["#", "*", "!", "^", "%"]
print ("Original String : " + str1)
print("After removing unwanted characters:")
print(remove_chars(str1, unwanted_chars))
print ("\nOriginal String : " + str2)
print("After removing unwanted characters:")
print(remove_chars(str2, unwanted_chars))
Sample Output:
Original String : Pyth*^on Exercis^es After removing unwanted characters: Python Exercises Original String : A%^!B#*CD After removing unwanted characters: ABCD
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Previous: Write a Python program to check whether a given string contains a capital letter, a lower case letter, a number and a minimum length.
Next: Write a Python program to remove duplicate words from a given string.
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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
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