BigCodeBench / BigCodeBench v0.1.0_hf 92708df0-baaf-5cc3-85e9-bdaea4468db6

complete prompt

import pandas as pd
import matplotlib.pyplot as plt

def task_func(df):
    """
    Draw and return the daily turnover line chart from a pandas DataFrame.

    Parameters:
    df (DataFrame): A pandas DataFrame with 'Date' and 'Sales' columns.

    Returns:
    Axes: Matplotlib Axes object with the line chart.

    Raises:
    ValueError: If 'df' is not a DataFrame or lacks 'Date' or 'Sales' columns, or has no data to plot.

    Requirements:
    - pandas
    - matplotlib.pyplot

    Example:
    >>> df = pd.DataFrame({
    ...     'Date': pd.date_range(start='1/1/2021', end='12/31/2021'),
    ...     'Sales': np.random.randint(100, 2000, size=365)
    ... })
    >>> ax = task_func(df)
    >>> ax.get_title()  # Expected: 'Daily Turnover'
    'Daily Turnover'
    >>> ax.get_ylabel()  # Expected: 'Sales'
    'Sales'
    """

instruct prompt

Draw and return the daily turnover line chart from a pandas DataFrame.
The function should raise the exception for: ValueError: If 'df' is not a DataFrame or lacks 'Date' or 'Sales' columns, or has no data to plot.
The function should output with:
    Axes: Matplotlib Axes object with the line chart.
You should write self-contained code starting with:

Code

import pandas as pd
import matplotlib.pyplot as plt
def task_func(df):

code prompt

Code

import pandas as pd
import matplotlib.pyplot as plt
def task_func(df):

entry point

task_func

libs

• pandas
• matplotlib