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Recursively look for files with a specific extension
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find {directory} -type f -name '*.extension'
Example: To find all csv files in the current directory and its sub-directories, use:
find . -type f -name '*.csv'
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Return JSON response from Flask view
I have a function that analyzes a CSV file with Pandas and produces a dict with summary information. I want to return the results as a response from a Flask view. How do I return a JSON response?
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How would you make a comma-separated string from a list of strings?
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",".join(l) will not work for all cases. I'd suggest using the csv module with StringIO
import StringIO
import csv
l = ['list','of','["""crazy"quotes"and\'',123,'other things']
line = StringIO.StringIO()
writer = csv.writer(line)
writer.writerow(l)
csvcontent = line.getvalue()
# 'list...
从Sloodle看三维虚拟学习环境的发展趋势 - 资讯 - 清泛网 - 专注C/C++及内核技术
...的使用。这些系统中的工具支持大部分教学中的特征 ,如文件共享、讨论、任务 ,以及与教学信息系统的整合。
另一方面 ,大型多人在线游戏 (Massively Multip layer Online Games,MMOG)也逐渐变为大众游戏 ,吸引了越来越多的关注。现在...
笨法玩电商网站秒杀 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...参考我以前写的「Redis消息通知系统的实现」。
把请求保存到队列里之后，可以通过Gearman实现Worker来消费队列，请求的生产和消费是异步的，所以不会出现并发拥堵，但是可能发生延迟，如果出现这种情况，可以通过增加Worker...
How to print pandas DataFrame without index
... @Rockbar if you want to copy/export to excel you should be using df.to_csv anyway.
– U2EF1
Nov 18 '17 at 1:07
3
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download file using an ajax request
...tion that does some error checking on a form submission and then creates a csv file. If the error check fails, it has to come back with why it failed. If it creates the CSV it is telling the parent that "go ahead and fetch the file". I do that by posting to the ajax file with the form variable then ...
Pretty Printing a pandas dataframe
... the table as text. The trick is to convert the data_frame to an in-memory csv file and have prettytable read it. Here's the code:
from StringIO import StringIO
import prettytable
output = StringIO()
data_frame.to_csv(output)
output.seek(0)
pt = prettytable.from_csv(output)
print pt
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Parsing huge logfiles in Node.js - read in line-by-line
...t-stream');
var lineNr = 0;
var s = fs.createReadStream('very-large-file.csv')
.pipe(es.split())
.pipe(es.mapSync(function(line){
// pause the readstream
s.pause();
lineNr += 1;
// process line here and call s.resume() when rdy
// function below w...
How to import an excel file in to a MySQL database
...ome text format. The easiest will probably be a tab-delimited version, but CSV can work as well.
Use the load data capability. See http://dev.mysql.com/doc/refman/5.1/en/load-data.html
Look half way down the page, as it will gives a good example for tab separated data:
FIELDS TERMINATED BY '\t' ENC...