Python: Get a string made of the first 2 and the last 2 chars from a given a string
Python String: Exercise-3 with Solution
Write a Python program to get a string made of the first 2 and the last 2 chars from a given a string. If the string length is less than 2, return instead of the empty string.

Sample Solution:-
Python Code:
def string_both_ends(str):
if len(str) < 2:
return ''
return str[0:2] + str[-2:]
print(string_both_ends('w3resource'))
print(string_both_ends('w3'))
print(string_both_ends('w'))
Sample Output:
w3ce w3w3
Flowchart:

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Python Code Editor:
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Previous: Write a Python program to count the number of characters (character frequency) in a string.
Next: Write a Python program to get a string from a given string where all occurrences of its first char have been changed to '$', except the first char itself.
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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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