代码风格:遵循PEP 8等Python编码规范,以保持代码清晰、可读。 错误处理:在访问列之前,你可以检查列名是否存在于DataFrame中,例如使用if ‘column_name’ in df.columns:来进行检查。 通过遵循上述指南和最佳实践,你可以减少在访问pandas DataFrame列时遇到KeyError的风险。
# Convert the dictionary into DataFrame df = pd.DataFrame(data, columns=['Name', 'Age', 'Stream', 'Percentage']) print("Given Dataframe :\n", df) print("\nIterating over rows using loc function :\n") # iterate through each row and select # 'Name' and 'Age' column respectively. ...
在上述代码中,通过df.columns可以得到一个包含所有列名的Index对象。我们可以直接使用这个对象,或者将其转换为列表进行进一步的处理。 总结 本文介绍了如何使用Python Pandas库获取DataFrame中第一行的列名。通过使用columns属性,我们可以很方便地获取到列名的信息。Pandas提供了许多其他有用的属性和方法,可以用来处理DataFrame...
在Pandas中,DataFrame是一种二维表格数据结构,它类似于Excel表格或者SQL表。DataFrame的每一行和每一列都有一个标签,分别称为索引(index)和列名(columns)。然而,Pandas本身并没有直接提供设置"meta name"的功能,但我们可以使用其他方式来为DataFrame的行和列添加额外的元数据信息。 基础概念 元数据(Metadata):元...
You can change the column name of Pandas DataFrame by using the DataFrame.rename() method and the DataFrame.columns() method. In this article, I will
ser_df = pd.DataFrame({'Technology': ser.values}) print(ser_df) # Output: # Technology # 0 Spark # 1 Python # 2 Pandas 5. Add Column Name to Series using reset_index You can also have Series Index and values as two different columns on DataFrame, In order to get that usereset_...
Python program for sorting columns in pandas DataFrame based on column name# Importing pandas package import pandas as pd # Creating a Dictionary dict = { 'Name':['Amit','Bhairav','Chirag','Divyansh','Esha'], 'DOB':['07/12/2001','08/11/2002','09/10/2003','10/09/2004','11/...
Flexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more - BUG: Empty column name in group dataframe when using pyarrow types · pandas-
Pandas version checks I have checked that this issue has not already been reported. I have confirmed this bug exists on the latest version of pandas. I have confirmed this bug exists on the main branch of pandas. Reproducible Example imp...
它的操作方式类似于 DataFrame 构造函数,除了 orient 参数,默认为 'columns',但可以设置为 'index',...