如何在 pandas 中遍历列名

为了在 pandas 中遍历列名，使用

how-to-iterate-column-names-in-pandas.py

for column in df.columns:
    print(columns)

for column in df.columns:
    print(columns)

例如，对于 TechOverflow pandas 时间序列示例数据集，df.columns 将是

columns_index_example.py

Index(['Sine', 'Cosine'], dtype='object')

Index(['Sine', 'Cosine'], dtype='object')

因此使用以下命令遍历列

iterate_columns_example.py

# 加载预构建的时间序列示例数据集
df = pd.read_csv("https://datasets.techoverflow.net/timeseries-example.csv", parse_dates=["Timestamp"])
df.set_index("Timestamp", inplace=True)

# 遍历列
for column in df.columns:
    print(column)

# 加载预构建的时间序列示例数据集
df = pd.read_csv("https://datasets.techoverflow.net/timeseries-example.csv", parse_dates=["Timestamp"])
df.set_index("Timestamp", inplace=True)

# 遍历列
for column in df.columns:
    print(column)

将打印

iterate_columns_output.txt

Sine
Cosine

Sine
Cosine

注意 df.columns 将不显示 索引列！

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