When exporting a DataFrame to excel, the index is formated in quarters (2001-Q1,2001-Q2...). However, when I export it to excel (through ExcelWriter), it looses the format. How can I maintain the quarter`s format when exporting it to excel.
For reference, this was used for formatting:
df['Quarter'] = df['ISSUE_DATE'].dt.to_period('Q')
df = df.set_index('Quarter')
with pd.ExcelWriter("file_name.xlsx") as writer:
df.to_excel(writer, sheet_name='Quarterly Dataset', index=True)