除法导致的 RuntimeWarning: invalid value encountered in long_scalars

Description

/Users/bestony/Code/cli/grank/grank/script/social.py:46: RuntimeWarning: invalid value encountered in long_scalars
  social_df["score"] = social_df.apply(lambda row: row.community_member / row.all_member  , axis=1)

Contributor guide

Tech stack

pythonpandasnumpy

Domain

dataanalytics

Issue type

bug

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

1

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

under 1 hour

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

stale

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

clear

Prerequisites

basic Pythonpandas

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

80

Research direction

The issue is a RuntimeWarning due to division by zero in `grank/script/social.py` line 46. The warning occurs when `row.all member` is zero. To fix, add a condition to check for zero before division, e.g., using `np.where` or pandas' `div` with a fill value. No maintainer response or linked PR exists, so the fix can be submitted directly.