You never know who else needs to look at or work on your code at some point in the future, even if it's a solo project. It's a good habit to get into no matter what (and if you're not fluent in English it can also be a good learning experience).
Standard libraries/APIs/keywords are in English anyway so even if you want to write your code in another language, at best it's going to turn into an inconsistent jumble of that language mixed in with a lot of English. I really don't see much advantage to doing this.
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All English, all the time.
You never know who else needs to look at or work on your code at some point in the future, even if it's a solo project. It's a good habit to get into no matter what (and if you're not fluent in English it can also be a good learning experience).
Standard libraries/APIs/keywords are in English anyway so even if you want to write your code in another language, at best it's going to turn into an inconsistent jumble of that language mixed in with a lot of English. I really don't see much advantage to doing this.