Is the phrase “How to Change Something?” Grammatically Correct?

The phrase “How to change somenthing?” is understandable but not grammatically perfect in formal English.

✅ Grammatically Correct Version:

“How do I change the column names in a pandas DataFrame?”
or
“How can I change the column names in a pandas DataFrame?”

🔍 Why?

• “How to [verb]” is often used in titles, instructions, or informal contexts (like tutorials or search queries), but it’s not a complete question in standard grammar.
• In formal writing or spoken English, a proper question requires a subject and an auxiliary verb (like “do” or “can”).

However, in programming tutorials or documentation, using “How to…” is very common and widely accepted.