将'filepath‘列添加到pandas DataFrame

import pandas as pd

data = {'col1': [1, 2, 3],
        'col2': ['a', 'b', 'c']}
df = pd.DataFrame(data)

df['filepath'] = '/path/to/file'

import pandas as pd

data = {'col1': [1, 2, 3],
        'col2': ['a', 'b', 'c']}
df = pd.DataFrame(data)

df = df.assign(filepath='/path/to/file')

import pandas as pd

data = {'col1': [1, 2, 3],
        'col2': ['a', 'b', 'c']}
df = pd.DataFrame(data)

df.insert(loc=2, column='filepath', value='/path/to/file')