﻿ Python: Filter the height and width of students which are stored in a dictionary using lambda - w3resource

# Python: Filter the height and width of students which are stored in a dictionary using lambda

## Python Lambda: Exercise-34 with Solution

Write a Python program to filter the height and width of students, which are stored in a dictionary using lambda.

Sample Solution:

Python Code :

``````def filter_data(students):
result = dict(filter(lambda x: (x[1][0], x[1][1]) > (6.0, 70), students.items()))
return result
students = {'Cierra Vega': (6.2, 70), 'Alden Cantrell': (5.9, 65), 'Kierra Gentry': (6.0, 68), 'Pierre Cox': (5.8, 66)}
print("Original Dictionary:")
print(students)
print("\nHeight> 6ft and Weight> 70kg:")
print(filter_data(students))
``````

Sample Output:

```Original Dictionary:
{'Cierra Vega': (6.2, 70), 'Alden Cantrell': (5.9, 65), 'Kierra Gentry': (6.0, 68), 'Pierre Cox': (5.8, 66)}

Height> 6ft and Weight> 70kg:
{'Cierra Vega': (6.2, 70)}
```

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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)```