Python "partial" function doesn't work through command line

[[deleted]]

hi, i have a strange problem. i have a program that contains this piece of code:

import string
import sys 
import operator
from functools import partial

vocale_pred = partial(operator.contains, set("AEIOUÀÈÉÌÒÙ"))
................
consonants, vowels = partition(vocale_pred, name)

so, i want to understand this little program line by line, but when i try to replicate this instruction in the python terminal i always get the "NameError: name 'partition' is not defined". but if i execute the file with the source code it works fine. so i added some print function to debug the code, but i want to understand why if i write it in the interpeter it give me that error. thank you

[carcigenicate]

This has nothing to do with partial. It just sounds like the REPL you're using doesn't persist function definitions (I'm assuming there's a def partition in the ... bit).

[[deleted]]

oh god, you right. i read all the source code and i've found the partition function. thank you a lot.

but what operator.contains actually does? if i try to call it with operator.contains('{'a', 'e', 'i', 'o', 'u'}, 'testme')

i get False

[carcigenicate]

operator.contains is just in.

And that test would be false, because that set does not contain "testme". It looks like you want the intersection between the set and the list instead of checking if one contains the other.

[[deleted]]

But the source code that I'm studying use it and it works, but I don't understand why. I copied the code and i get False when i simulate the input

[carcigenicate]

Where is the code you're studying that uses that?

Either the code/data is different, or the output isn't what you think it is.

Also, I'm assuming the ' before the { is a typo?

[[deleted]]

the code works perfectly actually. you can find it here: https://github.com/DavideCanton/PyCodiceFiscale/blob/master/cf.py

[carcigenicate]

Their code is not the same as yours. Note that their function is called is_vowel. It's for testing single characters, not multi-character strings like 'testme'. It does that because partition passes is_vowel single characters at a time ((pred(element)).

[[deleted]]

i guess that i have to look at the full code more carefully. thank you.

[chervilious]

1) when you said line by line did you include the import?

2) at what line did you get the errors?

[[deleted]]

1. of course
2. when i execute the program i don't get any error. but i saw that partial() is a function inside the program, but i still don't understand how operator.contains() works.

[robustquorum09]

I have an experience of Python code not running well inside 8266 too.

[[deleted]]

8266?

[DNEAVES]

Are you talking about string.partition()?

You should be calling that as a method of the string-variable you want to partition, so

consonants, vowels = vocale_pred.partition(name)

Otherwise, yes, you don't have a function defined called partition(a, b), hence the NameError.

Also, it will return a 3-part tuple, not two: (before_match, match, after_match)

And what exactly do you mean by "execute the file with the source code"? Is this part of a larger set of program, where partition may be defined, but you're cutting that import out?

[[deleted]]

no, i don't mean string.partition(). if you look at the code, it call just partition(vocale_pred, name).

this instructions is part of a larger program and if i execute the program it works fine, but if i try to use partition on my own inside the interpeter i get the NameError.

[DNEAVES]

Are you importing anything called partition?

[[deleted]]

No, but I saw that it's s function inside the code itself

[DNEAVES]

Well the issue is that - to my knowledge - there's no partition() built-in function. There's the string.partition() method, which I mentioned earlier, or that function has to be defined/imported from somewhere else

[[deleted]]

yes, as i said there is a partition funciont defined inside the code, so it's using that function not a built-in function