withopen(file_path,'r',encoding='utf-8')asfile:lines=file.readlines()# 去掉换行符lines=[line.strip()forlineinlines]print(lines) 1. 2. 3. 4. 5. 6. 四、ER图表示 为了更加清晰地理解文件读取过程,我们可以用ER图表示相关的对象和关系: FILEstringpathstringencodingCONTENTstringtextcontains 在这个...
'r', encoding='utf-8') as file:for line in file:# 使用findall寻找所有匹配matches = search_...
文档的写入是 打开结果文档 f3 = open("myfile@2.txt", "w") , 写入内容 f3.write()。
After a file is opened, read and write operations can be performed on the file according to the opening mode. Note that when the file is opened as a text file, read and write in string mode, using the encoding used by the current computer or the specified encoding; When the file is o...
somestring ='abcd'withopen("test.bin","wb")asfile: file.write(somestring) There is nothing magical about binary files; the only difference with a file opened in text mode is that a binary file will not automatically translate\nnewlines to the line separator standard for your platform; e....
attach(message_docx) # message_image = MIMEText(open(dir_+'\test.jpg', 'rb').read(), 'base64', 'utf8') # message_image.add_header('content-disposition', 'attachment', filename='test.jpg') # msg.attach(message_image) #发送邮件 smt_p.sendmail(sender,i,msg.as_string()) #sleep...
readline([size]) -> next line from the file, as a string. Retain newline. A non-negative size argument limits the maximum number of bytes to return (an incomplete line may be returned then). Return an empty string at EOF. """ pass def readlines(self, size=None): # real signature ...
csvfile=open('./data.csv','r')reader=csv.DictReader(csvfile)forrowinreader:print(row) 控制台输出: 二、JSON数据 同样在世卫组织官网下载数据源,重命名为data.json。用格式化工具打开json文件如下: 编写程序对 json 进行解析 代码语言:javascript ...
open 文件的 newline 参数 withopen(filename,'r',newline=None)as 1. 这个主要是因为不同操作系统的换行符不同,所以有了这个参数。Windows 是 CRLF 即 \r\n,Unix 是 LF 即\n,旧版 Macintosh 是 CR 即\r。
("测试", 'utf-8') # 接收者 subject = 'Python SMTP 邮件测试' message['Subject'] = Header(subject, 'utf-8') try: smtpObj = smtplib.SMTP('localhost') smtpObj.sendmail(sender, receivers, message.as_string()) print "邮件发送成功" except smtplib.SMTPException: print "Error: 无法发送邮件...