> For the complete documentation index, see [llms.txt](https://www.pythonclassroom.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.pythonclassroom.com/python-cloud-options/cloud9/cloud9-debugging.md).
# CS50 IDE Debugging
## Text Editor Debugging
Once you've saved a file with a file extension (i.e. something.py), CS50 IDE's text editor will detect syntax errors in your code. Sometimes the error will be on the same line as
and other times it will be the line after. Keep this in mind when you're debugging your code.
{% hint style="info" %}
Fix syntax errors as they appear. Don't write lines and lines of code without testing to see if your program works. It will cost you more time in the long run.
{% endhint %}
### Example 1
Cloud9 detects a syntax error on the same line as the syntax error.
### Example 2
Cloud9 detects a syntax error as the line after the syntax error.
## Terminal Debugging
Similarly, if run the file in the Terminal, Python will give you a similar error message. Remember, the error is on that line or the previous line.
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