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Python: Find whether a given string starts with a given character using Lambda

Python Lambda: Exercise-7 with Solution

Write a Python program to find whether a given string starts with a given character using Lambda.

Sample Solution:

Python Code :

starts_with = lambda x: True if x.startswith('P') else False
print(starts_with('Python'))
starts_with = lambda x: True if x.startswith('P') else False
print(starts_with('Java'))

Sample Output:

True
False

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Python: Tips of the Day

Python: Cache results with decorators

There is a great way to cache functions with decorators in Python. Caching will help save time and precious resources when there is an expensive function at hand.

Implementation is easy, just import lru_cache from functools library and decorate your function using @lru_cache.

from functools import lru_cache

@lru_cache(maxsize=None)
def fibo(a):
    if a <= 1:
        return a
    else:
        return fibo(a-1) + fibo(a-2)

for i in range(20):
    print(fibo(i), end="|")

print("\n\n", fibo.cache_info())

Output:

0|1|1|2|3|5|8|13|21|34|55|89|144|233|377|610|987|1597|2584|4181|

 CacheInfo(hits=36, misses=20, maxsize=None, currsize=20)