readlines

readlines gives me additional linebreaks python2.6.5

由 梦想与她 提交于 2019-12-01 23:39:03
问题 I have problems with the following code: file = open("file.txt", "r") lines = file.readlines() print lines[0] print lines[1] print lines[2] file.close() This code gives me linebreaks between the lines. So the output is something like this: line0 line1 line2 How can this be solved? 回答1: print adds a newline. Strip the newline from the line: print lines[0].rstrip('\n') print lines[1].rstrip('\n') print lines[2].rstrip('\n') If you are reading the whole file into a list anyway , an alternative

第二次结对编程作业

由 强颜欢笑 提交于 2019-12-01 10:25:16
1、队友链接 曾世缘: FormerAutumn 队员本次作业博客: 地址 Fork的仓库地址: Seeclong 2、分工 我负责UI的编写以及在前端加入api接口与界面交互相连接 出牌算法大部分由大哥完成，我负责了其中特殊牌型的判断 3、PSP表格 PSP2.1 Personal Software Process Stages 预估耗时（分钟） 实际耗时（分钟） Planning 计划 30 40 · Estimate · 估计这个任务 需要多少时间 10 20 Development 开发 960 1250 · Analysis · 需求分析 (包括学习新技术) 120 240 · Design Spec · 生成设计文档 30 40 · Design Review · 设计复审 30 20 · Coding Standard · 代码规范 (为目前的开发 制定合适的规范) 30 30 · Design · 具体设计 60 40 · Coding · 具体编码 480 360 · Code Review · 代码复审 30 40 · Test · 测试（自我测试， 修改代码，提交修改） 180 480 Reporting 报告 170 270 · Test Repor · 测试报告 90 120 · Size Measurement · 计算工作量 20 30 ·

简书read、readline、readlines的区别

由 放肆的年华 提交于 2019-12-01 07:46:45
read：一次性读取整个文件内容。 readline：每次读取一行内容，返回一个字符串。 readlines：一次性读取整个文件内容，并按行返回list，方便遍历。 总结：一般小文件我们都采用read()，不确定大小你就定个size，大文件就用readlines() 来源： https://www.cnblogs.com/wenm1128/p/11670115.html

Get total number of non-blank lines from text file?

由 元气小坏坏 提交于 2019-12-01 03:59:11
I am using... File.ReadLines(@"file.txt").Count(); ...to find the total number of lines in the file. How can I do this, but ignore all blank lines? You can use String.IsNullOrWhiteSpace method with Count : File.ReadLines(@"file.txt").Count(line => !string.IsNullOrWhiteSpace(line)); Or another way with All and char.IsWhiteSpace : File.ReadLines(@"file.txt").Count(line => !line.All(char.IsWhiteSpace)); 来源： https://stackoverflow.com/questions/22135262/get-total-number-of-non-blank-lines-from-text-file

How to read the last line in a textbox?

由 时光毁灭记忆、已成空白 提交于 2019-12-01 03:44:04
问题 I have a multiline textbox that constantly gets updated. I need to read only the last word/sentence in the textbox. string lastLine = textBox1.ReadLine.Last(); 回答1: Try this: if (textBox1.Lines.Any()) { string lastLine = textBox1.Lines[textBox1.Lines.Length - 1]; } And for last word: string lastword = lastLine.Split(' ').Last(); 回答2: You can extract the last line from any string as follows: string str = ....; string[] lines = str.Split('\n', '\r'); string last_line = lines[lines.Length - 1];

Does readlines() return a list or an iterator in Python 3?

由 China☆狼群 提交于 2019-12-01 02:04:58
I've read in "Dive into Python 3" that "The readlines() method now returns an iterator, so it is just as efficient as xreadlines() was in Python 2". See here: http://diveintopython3.org/porting-code-to-python-3-with-2to3.html . I'm not sure that it's true because they don't mention it here: http://docs.python.org/release/3.0.1/whatsnew/3.0.html . How can I check that? Like this: Python 3.1.2 (r312:79149, Mar 21 2010, 00:41:52) [MSC v.1500 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> f = open('/junk/so/foo.txt') >>> type(f.readlines())

Removing \r\n from a Python list after importing with readlines

由 ぃ、小莉子 提交于 2019-11-30 14:36:08
问题 I have saved a list of ticker symbols into a text file as follows: MMM ABT ABBV ANF .... Then I use readlines to put the symbols into a Python list: stocks = open(textfile).readlines() However, when I look at the list in it contains Windows end-of-line delimiter which I do not want: list: ['MMM\r\n', 'ABT\r\n', 'ABBV\r\n', 'ANF\r\n', 'ACE\r\n', 'ACN\r\n', 'ACT\r\n', 'ADBE\r\n', 'ADT\r\n', 'AMD\r\n', 'AES\r\n', ..... Can someone suggest the easiest way to remove these unwanted characters? 回答1:

python--文件读写--函数

由 二次信任 提交于 2019-11-30 14:24:38
知识点一、文件读写内容 1、当文件当前没有写文件模式，默认为r，当文件以r的形式打开不存在的文件会报错 f = open('a.txt') f = open('a.txt','r',encoding = 'utf-8')文件内容： yangmingyuexiaohongxiaomgg 23434dakggak（1）read f = open('a.txt','r',encoding = 'utf-8')#当前没有写文件模式，默认为rprint('read',f.read())#读出文件所有内容，文件内容为字符串 (2)readlines f = open('a.txt','r',encoding = 'utf-8')#当前没有写文件模式，默认为rprint('readlines',f.readlines())#读出文件所有内容,把文件每一行内容放在list中 (3)readline f = open('a.txt','r',encoding = 'utf-8')#当前没有写文件模式，默认为rprint('readline',f.readline())#一次只读一行 （4）文件指针：控制文件读到的位置 f = open('a.txt','r',encoding = 'utf-8')#当前没有写文件模式，默认为rprint('readlines',f.readlines())

第一次个人编程作业

由 爷，独闯天下 提交于 2019-11-29 21:16:36
GitHub： pullself 前言 在写作业之前，考虑是把这篇写成文档那样严肃点的还是写成随笔那样随性点的，在经历了中秋一堆比赛的大起大落之后，我选择了后者，以下文字若出现某些弱智发言以及跳脱思维，请谅解。 PSP以及事前准备 PSP 先上张PSP表吧，曾经我也用过这张表，但是从来没正常实现过，当然这次也没严格遵守过这个流程 PSP2.1 Personal Software Process Stages 预估耗时（分钟） 实际耗时（分钟） Planning 计划 75 75 Estimate 估计这个任务需要多少时间 75 75 Development 开发 850 780 Analysis 需求分析(包括学习新技术) 75 60 Design Spec 生成设计文档 30 10 Design Review 设计复审 35 40 Coding Standard 代码规范(为开发制定合适的规范) 25 10 Design 具体设计 115 150 Coding 具体编码 290 230 Code Review 代码复审 80 60 Test 测试(自我测试,修改,提交修改) 200 220 Reporting 报告 70 80 Test Report 测试报告 20 20 Size Measurement 计算工作量 10 10 Postmortem & Process

Python read text file from second line to fifteenth [closed]

由 戏子无情 提交于 2019-11-29 08:14:41
问题 I have a text file and I need to read from the seconds line to to 15th line including. I've tried some methods but no method worked for me... I'd be happy if anyone could help me ... thanks a lot! 回答1: Use itertools.islice : from itertools import islice with open('filename') as fin: for line in islice(fin, 1, 16): print line 回答2: If the file isn't very big: with open('/path/to/file') as f: print f.readlines()[1:15] 回答3: Jon's answer is definitely a more pythonic and clean approach.
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