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@mohammedahmed18 mohammedahmed18 commented Nov 18, 2025

PR Type

Bug fix


Description

  • Fix sample code for tag handling

  • Add future annotations import

  • Prevent KeyError using dict.get

  • Safeguard empty or missing tag lists


Diagram Walkthrough

flowchart LR
  Sample["Sample function in cmd_init.py"] -- "before: direct ['tags'] access" --> KeyErr["Possible KeyError / failures"]
  Sample -- "after: use get('tags', [])" --> Safe["Safe handling of missing tags"]
  Safe -- "return set(common_tags)" --> Output["Correct result"]
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File Walkthrough

Relevant files
Bug fix
cmd_init.py
Make sample function robust to missing tags                           

codeflash/cli_cmds/cmd_init.py

  • Prepend future annotations import to sample.
  • Use article.get("tags", []) to avoid KeyError.
  • Initialize common_tags from first article with default list.
  • Keep output as set for uniqueness.
+6/-3     

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PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 2 🔵🔵⚪⚪⚪
🧪 No relevant tests
🔒 No security concerns identified
⚡ Recommended focus areas for review

Sample Code Robustness

The embedded sample now uses string annotations (PEP 585) with from future import annotations and safer dict.get access. Validate that the generated file is executed in environments where future annotations are acceptable and that the string literal content preserves indentation and newlines correctly when written to disk.

    find_common_tags_content = """from __future__ import annotations


def find_common_tags(articles: list[dict[str, list[str]]]) -> set[str]:
    if not articles:
        return set()

    common_tags = articles[0].get("tags", [])
    for article in articles[1:]:
        common_tags = [tag for tag in common_tags if tag in article.get("tags", [])]
    return set(common_tags)
"""

@mohammedahmed18 mohammedahmed18 changed the title Correct sample code for demo optimization Correct sample code for demo optimization (CF-876) Nov 18, 2025
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PR Code Suggestions ✨

Explore these optional code suggestions:

CategorySuggestion                                                                                                                                    Impact
General
Use set intersections for efficiency

Convert the first article's tags to a set and use set intersection for subsequent
articles to avoid O(n*m) list scans and eliminate duplicates early. This also
prevents order-dependent behavior and is more robust for large inputs.

codeflash/cli_cmds/cmd_init.py [1233-1241]

 def find_common_tags(articles: list[dict[str, list[str]]]) -> set[str]:
     if not articles:
         return set()
 
-    common_tags = articles[0].get("tags", [])
+    common = set(articles[0].get("tags", []))
     for article in articles[1:]:
-        common_tags = [tag for tag in common_tags if tag in article.get("tags", [])]
-    return set(common_tags)
+        common &= set(article.get("tags", []))
+        if not common:
+            break
+    return common
Suggestion importance[1-10]: 8

__

Why: The suggestion is accurate and improves both correctness and performance by eliminating duplicate tags early and reducing complexity via set intersections; it also matches the new hunk code precisely.

Medium

@aseembits93 aseembits93 merged commit a7b9e85 into main Nov 20, 2025
22 checks passed
@aseembits93 aseembits93 deleted the fix/correct-sample-optimization-code branch November 20, 2025 22:22
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4 participants