with open('file.txt', 'r') as file: lines = file.readlines() 解释: • open('file.txt', 'r') : 打开文件 'file.txt' 以供读取。第一个参数是文件名,第二个参数是打开文件的模式。'r' 表示只读模式。 • with ... as ... : 使用 with 语句可以确保在读取完成后自动关闭文件,不需要...
'r', encoding="UTF-8") as f: lines = f.readlines()在读取模式下打开名为“filename.txt...
lines = f.readlines() for line in lines: print(line) f.close() 3.一次性读取方式read() 读取文件最简单的方式就是使用read(),read()将文件中一次性读出所有内容,并赋值给字符串变量,但是当文件比较大的时候不建议使用read()的方式去读取文件,因为一次读取比较大的内容会消耗大量的内存,影响系统的性能。...
with open(filename, "r") as fin, open("ProcessedData.txt", "w") as fin2: fin2.write(" Date Time Name Status" + "\n") lines = fin.read().splitlines() for i in range(0, len(lines), 4): fin2.write(''.join(line.ljust(15) for line in lines[i:i+4]) + "\n") Proce...
line=fileHandler.readline()if__name__=='__main__': main() 输出: ***Read all linesinfile using readlines() ***Hello Thisisa sample file that containsissome textislike123 ***Read file line by lineandthen close it manualy ***Hello Thisisa sample...
lines = set(lines_to_read) last = max(lines) for n, line in enumerate(file): if n + 1 in lines: yield line if n + 1 > last: return def split_file(filename, lines_per_page): """ @summary: split the file into n lines a page ...
text=sys.stdin.read() words=text.split() wordcount=len(words)print('Word count:', wordcount) 另外还有一个文本文件somefile.txt: Your mother was a hamsterandyour father smelled of elderberries. 以下是在cygwin环境中执行 cat somefile.txt | python somescript.py ...
name不是目录就返回false os.path.isfile(name):判断name是不是一个文件,不存在name也返回false os.path.exists(name):判断是否存在文件或目录name os.path.getsize(name):获得文件大小,如果name是目录返回0L os.path.abspath(name):获得绝对路径 os.path.normpath(path):规范path字符串形式 os.path.split(...
for line in lines: print line, fd.close() print "-"*8 ###一次性读取方式read() fd = open(filename, "r") content = fd.read() #读取文件所有内容 print content, print "length:", fd.tell() #文件总长度 fd.seek(0) #文件指针返回文件开头,否则再读取不到内容 ...
= http.client.OK) and \ (ret != http.client.CREATED) and \ (ret != http.client.NO_CONTENT)) @ops_conn_operation def file_exist_on_slave(file_path='', ops_conn=None): file_dir, file_name = os.path.split(file_path) file_dir = file_dir + "/" file_dir = file_dir.replace...