如果文件不太大,最好将read()的结果存储在一个变量中: textfile = open(path_to_file, 'r')file_content = textfile.read()print(file_content)for a in range(len(file_content.split())): print(a) 更惯用的方法是使用readlines(),例如: textfile = open(path_to_file, 'r')# Returns a list...
with open() as file是由open()函数引申而来 fp = open("./aa.txt","w+") fp.write("This is a text file.") fp.close() 上面是一个open()函数的例子,在用完之后必须关闭文件,否则就造成了系统资源的长期占用! with open("./aa.txt","w+") as fp: fp.write("This is a text file.")pri...
file.close() with方法 withopen(r'D:\Users\Desktop\新建文本文档1.txt','w')asfile: file.write('奋斗成就更好的自己') 通过python往已有数据中插入新的一行 以csv和text文件为例: """在csv文件中第一行添加索引字段""" """seek() 方法用于移动文件读取指针到指定位置。 fileObject.seek(offset[, wh...
from tkinter.scrolledtext import ScrolledText def load(): with open(filename.get()) as file: contents.delete('1.0', END) contents.insert(INSERT, file.read()) def save(): with open(filename.get(), 'w') as file: file.write(contents.get('1.0', END)) top = Tk() top.title("简...
lines = ['Readme', 'How to write text files in Python'] with open('readme.txt', 'w') as f: f.write('\n'.join(lines)) 追加文件内容 如果想要将内容追加到文本文件中,需要以追加模式打开文件。以下示例在 readme.txt 文件中增加了一些新的内容: more_lines = ['', 'Append text files',...
with open("demo.txt") as file: print(file.read()) Python 中的readline() 方法 此方法将从文件中读取一行并返回。 在这个例子中,我们有一个包含这两个句子的文本文件: This is the first line This is the second line 如果我们使用readline()方法,它只会打印文件的第一句话。
1.使用read()函数逐个字节或者字符读取txt文件中的内容，文件的所有内容都会被存储在变量content中 with open('file.txt', 'r') as f: content = f.read() print(content)2.使用readline()函数逐行读取txt文件中的内容，每次读取的一行内容都会被存储在变量line中 with open('file.txt', 'r') as f...
# 获取当前文件路径d = path.dirname(__file__) if "__file__" in locals() else os.getcwd()# 获取文本texttext = open(path.join(d,'legend1900.txt')).read() 1. 2. 二:文件保存 with open ('Save_file_name', 'wb') as f: f.write('Save_the_content') with open('/Users/michael...
with open('somefile.txt', 'r') as f: data = f.read()# Iterate over the lines of the filewith open('somefile.txt', 'r') as f: for line in f: # process line# Write chunks of text datawith open('somefile.txt', 'w') as f: f.write(text1) f.write(text2...
with open('output.txt', 'a') as file: file.write("This text is appended.") 1. 2. 写入二进制文件 要写入二进制文件,使用二进制写入模式('wb'): 复制 with open('binary_data.dat', 'wb') as file: binary_data = bytes([0, 1, 2, 3, 4]) ...