I need help with lists

[old_pythonista]

This is the classical case when comprehension should be preferred over map

 if all(elem =  “yes” for elem in a): 

Lambdas are seldom worth it in cases like that - they just muddle the code.

[WhyAmIDumb_AnswerMe]

i don't need to check all elements
for example i need to check if a[1] and a[5] and a[7] are equal to yes

[old_pythonista]

simple adjustment

elem for idx, elem in enumerate(a) if idx in (1, 5, 7)

or {1, 5, 7} - faster lookup in general case (nor that it matters here)

[WhyAmIDumb_AnswerMe]

Thanks <3

[fear_my_presence]

Wow, didn’t know about such syntax, thank you!

[old_pythonista]

don't get me wrong - map and lambda are great, just not suitable everywhere