from math import sqrt

def zscore(obs, pop):
# Size of population.
number = float(len(pop))
# Average population value.
avg = sum(pop) / number
# Standard deviation of population.
std = sqrt(sum(((c - avg) ** 2) for c in pop) / number)
# Zscore Calculation.
return (obs - avg) / std

Am not a python developer, am php but this code looks pretty self explanatory, the confusing part is the double ** what does this mean in python, I need to implement this function in php, thanks guys

Anaconda

na cobra code i know.

when the function is called this is the output

==>>zscore(12, [2, 4, 4, 4, 5, 5, 7, 9] )

==>>3.5

cyrielo:


the confusing part is the [b]double ** [/b]what does this mean in python, I need to implement this function in php, thanks guys

It means power of
BTW y use float for population?

d double ** means power e.g 4**3 is same as 4^3

Raise to power

Thanks guys

Also bear in Mind that ** when being used with a function argument it will have entirely different meaning in variance to power function it performs in this example. So if you see a code like this

def foo(arg1, ** arg2):
     #some code here

The above does note mean arg1 raised to the power of arg2

kudaisi:
Also bear in Mind that ** when being used with a function argument it will have entirely different meaning in variance to power function it performs in this example. So if you see a code like this

def foo(arg1, ** arg2):
     #some code here

The above does note mean arg1 raised to the power of arg2

def foo(*args, **kwargs):
#some code

sisqology:
def foo(*args, **kwargs):
#some code

Did I miss something ? If you mean to refer to '*args, **kwargs' it just a common idiom used in such scenarios. It can be changed with any variable name you please as long as it does not interfere with the inbuilt Python keywords.

kudaisi:
Did I miss something ? If you mean to refer to '*args, **kwargs' it just a common idiom used in such scenarios. It can be changed with any variable name you please as long as it does not interfere with the inbuilt Python keywords.

No bro, I was only talking about another aspect where u can see **

sisqology:

No bro, I was only talking about another aspect where u can see **

Oh!..okay. Cool.

You can do something like this as of

<?php
//php >=5.6.0

$power = $num**$base is accepted
//With old there is php built in power function


pow($num, $base);

cyrielo:
from math import sqrt

def zscore(obs, pop):
# Size of population.
number = float(len(pop))
# Average population value.
avg = sum(pop) / number
# Standard deviation of population.
std = sqrt(sum(((c - avg) ** 2) for c in pop) / number)
# Zscore Calculation.
return (obs - avg) / std

Am not a python developer, am php but this code looks pretty self explanatory, the confusing part is the double ** what does this mean in python, I need to implement this function in php, thanks guys

you didn't define the variable c

cyrielo:

Am not a python developer, am php but this code looks pretty self explanatory, the confusing part is the double ** what does this mean in python, I need to implement this function in php, thanks guys

Your email has issues, anything I can help you with?

tr3y:

Your email has issues, anything I can help you with?

Yeah, how did it go with andela. im in the same scenario as you

cyrielo:

Yeah, how did it go with andela. im in the same scenario as you

I went there for my interview and my name was actually on the list they had so I didn't bother to ask why they sent the regret mail

tr3y:

I went there for my interview and my name was actually on the list they had so I didn't bother to ask why they sent the regret mail

oh nice

cyrielo:
oh nice

Did you get any interview message from U-CONNECT?

tr3y:


Did you get any interview message from U-CONNECT?

what is U-CONNECT?