python rename columns
时间: 2023-06-22 07:28:37 浏览: 63
To rename columns in Python, you can use the `rename` method of a pandas DataFrame. Here is an example code snippet:
```python
import pandas as pd
# create a sample DataFrame
df = pd.DataFrame({'A': [1, 2, 3], 'B': [4, 5, 6]})
# rename the columns
df = df.rename(columns={'A': 'new_A', 'B': 'new_B'})
# print the updated DataFrame
print(df)
```
In this example, we first create a sample DataFrame with columns 'A' and 'B'. We then use the `rename` method to rename the columns to 'new_A' and 'new_B'. Finally, we print the updated DataFrame using the `print` function.
相关问题
rename columns
Sure, I can help you with that. To rename columns in a pandas DataFrame, you can use the `rename` method. Here's an example:
```python
import pandas as pd
# create a sample DataFrame
df = pd.DataFrame({'A': [1, 2, 3], 'B': [4, 5, 6]})
# print the original DataFrame
print(df)
# rename the columns
df = df.rename(columns={'A': 'new_A', 'B': 'new_B'})
# print the DataFrame with renamed columns
print(df)
```
This will output:
```
A B
0 1 4
1 2 5
2 3 6
new_A new_B
0 1 4
1 2 5
2 3 6
```
In this example, we created a DataFrame with columns 'A' and 'B'. We then used the `rename` method to rename these columns to 'new_A' and 'new_B', respectively.
python rename列名
在Python中,我们可以使用pandas库中的rename()方法来修改表格的列名。这个方法非常方便易用。可以通过传入一个字典来指定要修改的列名和新的列名。例如,要将表格的"Id"列改为"序号","Name"列改为"姓名",可以使用如下代码:
```
import pandas as pd
# 创建示例DataFrame
df = pd.DataFrame({'Id': [1, 2, 3], 'Name': ['Tom', 'Jerry', 'Mickey']})
# 使用rename()方法修改列名
df = df.rename(columns={'Id': '序号', 'Name': '姓名'})
# 打印修改后的列名
print(df.columns)
```
以上代码会输出修改后的列名,即['序号', '姓名']。通过这种方式,我们可以方便地修改表格的列名。
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