This is an English-speaking forum, so yes, it is expected to use English and link to other stuff in English (or provide a translation). It doesn't mean that French (or any other language) is a bad thing, it just isn't the language used by this community.
Sure... but for the record, the code that the parent posted is in Python -- one of the global tech economy's pre-eminent programming languages for more than a decade. The parent's example contains some variables with Unicode values that are French words. It strikes me as odd that the parent would say sorry at all. Maybe the parent has a better understanding than I of linguistic sensitivities.