3 examples of 'create empty dataframe with column names pandas' in Python

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def fill_empty(df: pd.DataFrame) -> pd.DataFrame:
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    """Fill the gaps in the 'original' column with values from 'index'
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    Args:
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        df:
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    Returns:
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    """
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    index = df["original"].isnull()
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    df.loc[index, "original"] = df.loc[index, "index"]
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    return df

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def __init__(self, columns: List[str]):
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    self.columns = columns

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def get_empty_results_frame():
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    results_columns = ['file_name',
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                       'nRoundedTimeDuplicatesRemoved',
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                       'cgmPercentDuplicated',
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                       'gte40_lt70',
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                       'gte70_lte180',
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                       'gt180_lte400',
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                       'lt-1',
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                       'gte-1_lte1',
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                       'gt1']
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    for num in range(10):
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        results_columns.append("cond" + str(num))
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    for num in range(9):
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        # Append snapshot locations to dataframe
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        results_columns.append("cond"+str(num+1)+"_eval_time")
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    results_frame = pd.DataFrame(index=[0], columns=results_columns)
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    return results_frame