未定义名称“WorksheetNotFound”

Question

我正在尝试使用try/except处理pygsheets库中的错误。我的代码如下：

def export_col_values(workbook, df, columns):
    """for a list of columns, creates a new sheet for each column and exports unique values and their counts to that sheet"""
    for col in columns:
        value_counts = df[col].value_counts()
        counts_df = pd.DataFrame(value_counts).reset_index()
        counts_df['index'] = counts_df['index'].astype(str)
        try:
            worksheet = workbook.worksheet_by_title(col)
        except WorksheetNotFound:
            workbook.add_worksheet(col)
            worksheet = workbook.worksheet_by_title(col)
        worksheet.set_dataframe(counts_df, start='A1')
    print(f'{len(columns)} sets of column values exported.')

当工作表不存在时，我想创建一个新的工作表。但是，我发现错误“WorksheetNotFound”未定义。我知道我没有在代码中定义术语WorksheetNotFound，但我的理解是'Exception'语句将捕获'WorksheetNotFound'类型的任何错误（这是我在尝试访问不存在的工作表时遇到的错误）。try/except是否不能处理所有错误？或者except语句只识别某些类型的错误？谢谢

Answer 1

它实际上是pygsheets.WorksheetNotFound（doc）。所以试试看

except pygsheets.WorksheetNotFound: