how to get the first column of a dataframe in python code example

Example 1: first row as column df

df.rename(columns=df.iloc[0])

Example 2: get only first 10 columns pandas

df.iloc[:, : 50]

Example 3: pandas print first column

df = pd.DataFrame({"Letters": ["a", "b", "c"], "Numbers": [1, 2, 3]})
first_column = df.iloc[:, 0]