fix: correct Lesson 6.1 grading regex syntax error#110
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fix: correct Lesson 6.1 grading regex syntax error#110gn00295120 wants to merge 1 commit intoanthropics:masterfrom
gn00295120 wants to merge 1 commit intoanthropics:masterfrom
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Fixed Python syntax error in Exercise 6.1 by using raw strings (r prefix) for REGEX_CATEGORIES. The backslashes in regex patterns need to be escaped properly for Python's string parser before being passed to regex engine. Changes: - Added r prefix to all regex strings in REGEX_CATEGORIES - Fixes: SyntaxError when Python tries to parse the escape sequences Before: "A\) P" (Python tries to parse \) as invalid escape sequence) After: r"A\) P" (Python treats backslash literally, passes to regex) Fixes anthropics#103 Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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Pull request overview
This PR fixes a Python syntax error in Exercise 6.1 of the Precognition tutorial where regex patterns used invalid escape sequences. The fix adds raw string prefixes (r) to the regex patterns in the REGEX_CATEGORIES dictionary, ensuring backslashes are passed literally to the regex engine rather than being interpreted as escape sequences by Python's string parser.
Changes:
- Added raw string prefix
rto all four regex patterns inREGEX_CATEGORIESdictionary - Added explanatory comment documenting the fix
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Fixes #103
Description
Fixed Python syntax error in Exercise 6.1 grading code. The REGEX_CATEGORIES
dictionary used regular expressions with escaped backslashes, but Python's string
parser was trying to interpret the escape sequences before passing them to the
regex engine, causing a syntax error.
Changes
Technical Details
Before:
"A\) P"(Python tries to parse ) as invalid escape)After:
r"A\) P"(Python treats backslash literally)Testing