Lambda Functions

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Lambda Functions 

11 pm. I'm on the train home from London, having met up with my little sis.

Should I do some work? No I don't work at this time.

Should I read? I can't at this time.

I know. I'll learn some AI. So currently I am taking two foundational modules that my AI engineer colleagues have recommended. Then I can do the full AI/ML career path. 

A wind farm on a clifftop by the sea in Cornwall UK in the daylight.
A wind farm in Cornwall that my wonderful sister sent me.

Lambda Functions for Pandas

"Learn to define a Python function in one line."...

Sounds like JavaScript. Which I miss. Only because I love it so much - don't remind me. I miss it every day. Anyway I love Python too...

 So this is my attempt at writing a lambda function:

age_in_dog_years = lambda age: age * 7

And this is attempt number two:

say_hi = lambda name: print('Hi ' + name)

Okay not so bad for someone who is writing at midnight on the train on the train from London for today having worked all day.

An if statement inside of a lambda function...?

Okay so what if I want to put my if statement inside of a lambda function? then what do we do then? thanks.

OMG I LOVE THIS SYNTAX. THIS IS SOME AMAZING SYNTAX OMG. OMG.


So:

is_it_my_birthday = lambda birthday: 'YES, IT'S MY BIRTHDAY' if birthday else 'Not today, no, sadly...'

Note the use of the keyword lambda. 

The syntax is so cool but it is impossible as far as I know without the use of the keyword lambda.

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