Sweetviz Common Issues

Common Issues

Common Issues

Issue: Report generation is slow

# Solution 1: Disable pairwise analysis
report = sv.analyze(df, pairwise_analysis="off")

# Solution 2: Sample data
report = sv.analyze(df.sample(50000))

# Solution 3: Skip high-cardinality columns
config = sv.FeatureConfig(skip=["high_card_col"])
report = sv.analyze(df, feat_cfg=config)

Issue: Memory error with large dataset

# Solution: Process in chunks or sample
sample_size = min(len(df), 100000)
report = sv.analyze(df.sample(sample_size, random_state=42))

Issue: HTML report won't open

# Solution: Save and open manually
report.show_html("report.html", open_browser=False)
# Then open report.html in browser

# Or specify layout
report.show_html("report.html", layout="vertical")

Issue: Categorical variables treated as numeric

# Solution: Force categorical type
config = sv.FeatureConfig(force_cat=["zip_code", "rating"])
report = sv.analyze(df, feat_cfg=config)

# Or convert before analysis
df["zip_code"] = df["zip_code"].astype(str)

Issue: Date columns not recognized

# Solution: Convert to proper datetime
df["date_col"] = pd.to_datetime(df["date_col"])
report = sv.analyze(df)

Issue: Report shows too many categories

# Sweetviz automatically limits to top categories
# For custom handling, reduce cardinality before analysis
df["category"] = df["category"].apply(
    lambda x: x if x in top_categories else "Other"
)