动态重命名 Python 中的列名

Question

I am working on a task where I receive several excel files containing similar information. However, every excel sheet has its own column name naming convention, and I have to change the column names in excel manually. Additionally, the columns might get shuffled in the next iteration. So basically, there is no fixed format of the source files currently in place.

Is there any way for automation with Python?

With pandas, I can rename column names with a loop checking with if condition. But again, it's hardcoding. How can this be dynamically handled?

for i in range(len(df)):
   # print(col_names[i])
    if df[i] == 'Department':
        df[i] = 'dept'

Answer 1

Use the .rename method:

df.rename({'old_col_name':'new_col_name','old_col_name2':'new_col_name2'},axis=1

Answer 2

You can use .rename method:

df.rename(columns={'oldName1': 'newName1', 'oldName2': 'newName2'}, inplace=True)

If your column indexes remain same, you can also do:

df.columns = ['newName1', 'newName2']