Issue on page /workflow-style.html

[crossxwill]

I suggest adding this example to "6.4. Line width and line continuation". Method chaining is easier to read inside parentheses and one line per method.

import pandas as pd
import numpy as np

df = pd.DataFrame(
    data={
        "col0": [0, 0, 0, 0],
        "col1": [0, 0, 0, 0],
        "col2": [0, 0, 0, 0],
        "col3": ["a", "b", "b", "a"],
        "col4": ["alpha", "gamma", "gamma", "gamma"],
    },
    index=["row" + str(i) for i in range(4)],
)

  
# Chaining inside parentheses works

results = (df
    .groupby(["col3", "col4"])
    .agg({"col1": "count", "col2": "mean"})
)

print(results)

# Error: SyntaxError: invalid syntax

results = df
    .groupby(["col3", "col4"])
    .agg({"col1": "count", "col2": "mean"})