除了使用pandas库,我们还可以使用Python的内置csv模块来读取CSV文件。csv模块提供了reader函数,它可以逐行读取CSV文件的内容。我们可以使用next函数来跳过指定行数的数据。 下面是使用csv模块读取CSV文件指定行的示例代码: importcsv# 读取CSV文件的前5行数据withopen('data.csv','r')ascsvfile:reader=csv.reader(csv...
withopen("FileData.txt",'r') as csvfile: reader=csv.reader(csvfile, delimiter='|') forrowinreader: print(row) Tip: Never name your python file “csv.py”. That goes for other libraries as well. When you use the import csv statement, Python might think you mean the file, not the...
# 导入 csv 模块，用于操作CSV文件 import csv # 1班成绩单.csv文件的相对路径 file_path = r'各...
By file-like object, we refer to objects with a ``read()`` method, such as a file handle (e.g. via builtin ``open`` function) or ``StringIO``. sep: str, default ',' Delimiter to use. If sep is None, the C engine cannot automatically detect the separator, but the Python pa...
使用PythonI/O写入csv文件 以下是将"birthweight.dat"低出生体重的dat文件从作者源处下载下来,并且将其处理后保存到csv文件中的代码。 import csv import os import numpy as np import random import requests # name of data file # 数据集名称 birth_weight_file = 'birth_weight.csv' ...
Here, we have opened the people.csv file in reading mode using: with open(airtravel.csv', 'r') as file: We then used the csv.reader() function to read the file. To learn more about reading csv files, Python Reading CSV Files. Using csv.DictReader() for More Readable Code The cs...
参考链接: Python | 使用pandas.read_csv()读取csv 1、pandas简介 pandas 是基于NumPy 的一种工具,该工具是为了解决数据分析任务而创建的。Pandas 纳入了大量库和一些标准的数据模型,提供了高效地操作大型数据集所需的工具。pandas提供了大量能使我们快速便捷地处理数据的函数和方法。你很快就会发现,它是使Python成为...
read_csv()函数的作用是将CSV文件的数据读取出来,并转换成DataFrame对象。read_csv()函数的语法格式如下。 read_csv(filepath_or_buffer,sep=',',delimiter=None,header='infer',names=None,index_col=None,usecols=None,squeeze=False,prefix=None,mangle_dupe_cols=True,dtype=None...) ...
The first line of the file consists of dictionary keys. read_csv_dictionary.py #!/usr/bin/python # read_csv3.py import csv with open('values.csv', 'r') as f: reader = csv.DictReader(f) for row in reader: print(row['min'], row['avg'], row['max']) ...
reslt=pd.read_csv('D:\project\python_instruct\weibo_network.txt') print('原始文件:', result) 输出: Traceback (most recent call last): File "<ipython-input-5-6eb71b2a5e94>", line 1, in <module> runfile('D:/project/python_instruct/Test.py', wdir='D:/project/python_instruct') ...