I've made a python dictionary of lambdas:
d['a'] = lambda x: x.count('a')
d['b'] = lambda x: x.count('b')
d['c'] = lambda x: x.count('c')
For each key ('a', 'b', 'c') of the dictionary a lambda function receive a parameter and count how many times appears that specific letter.
This works wonderfully.
The problem is when I try to make it with dictionary comprehension...
lst = ['a', 'b', 'c']
d = {k: lambda x: x.count(k) for k in lst}
... or even with a simple for-loop:
for i in lst:
d[i] = lambda x: x.count(i)
The code runs, but when I try to call to a specific lambda, like:
print(d['a']('apple'))
it appears that all the lambdas count how many times the 'c' letter appears(!) and not the other letters.
Somebody can explain me why?
How can we make it in a for-loop?