Skip to main content

Using global variable in Python 

  1: # two global variable
  2: myMin = 360.0
  3: myMax = 0.0
  4: 
  5: def MyStatistics( fileName ) :
  6: 	myFile = open(fileName)
  7: 	strList = myFile.readlines()
  8: 	
  9: 	# Specify that these two are global variable
 10: 	global myMin
 11: 	global myMax
 12: 	
 13: 	for str in strList :
 14: 		myFloat = float(str)
 15: 		if( myFloat > myMax ):
 16: 			myMax = myFloat
 17: 			
 18: 		if( myFloat < myMin ):
 19: 			myMin = myFloat
 20: 
 21: # a file with number seperate '\n'			
 22: MyStatistics(FileWithFloat)
 23: 
 24: print 'myMin = %s' % (myMin)
 25: print 'myMax = %s' % (myMax)
Labels:

Comments

Post a Comment

Popular posts from this blog

線上筆記本、便利貼整理 Online Note Taking Service (Especially Sticky Note) List

Some of the note taking service I have tried! Sticky Note lino it Comment: 精美、除了沒有辦法 download as file + print  之外，應該是這個  list  中的  best choice 中文資料儲存沒有問題，不會變亂碼 無法 double click create note, 但是可以用拖拉方式產生 可以 share, send link, embed, rss, 可用 email post, 無法存檔 無法 double click to edit，但是跳出視窗的速度還 OK、可直接 drag & drop 有 public(group) vs. private 的設定 不能 print(應該說 print 的時候內容不會出現) 有 Task 功能 無法download as file (應該沒有可以的) squareleaf Comment: 比較不  fancy  ，但是簡單可愛 中文資料儲存沒有問題，不會變亂碼 可用 browser print, 但是排版沒有很好 可直接點選編輯(不用等跳出小視窗後再 input) 無法在空白地方 double click 產生新 Note 無法 share, 無法download as file postica Comment: 精簡，稍微制式 中文資料儲存沒有問題，不會變亂碼 點選編輯的時候很慢，反應遲鈍 可以 Print, 但是中文編碼要選 UTF-8 可以 drag & drop 無法 download as file, 無法 share wall wisher Comment: 精美 中文儲存有問題 雙擊 create note, 可以拖拉 每個 note 有 160 character 的限制 文字沒有 Format，無法調整大小, 顏色 可 share, send link, rss fee...
4 comments
Read more

Setting MySQL to Use UTF-8 on MAMP (MySQL 5.5.9, or 5+)

I wanted to setup MySQL to use utf-8 on the MAMP installation on my Mac. I tried the instructions from this article: http://cameronyule.com/2008/07/configuring-mysql-to-use-utf-8/ However, I kept getting error messages that are similar to this one [ERROR] /Applications/MAMP/Library/bin/mysqld: unknown variable 'default-collation=utf8_general_ci' I did some search and realized that several variables are deprecated. Reference: http://dev.mysql.com/doc/refman/5.1/en/server-options.html Therefore, I added the following lines into /Applications/MAMP/conf/my.cnf [mysql] character-set-server=utf8 [client] character-set-server=utf8 [mysqld] character-set-server=utf8 collation-server=utf8_general_ci init-connect='SET NAMES utf8' I restarted the server and mysql run successfully with relevant variables being set correctly. In the "Variables" tab under phpMyAdmin interface (ex. http://localhost:8888/MAMP/?language=English) character set c...
2 comments
Read more

Using Pandoc for Doing Citation and Bibliography in Markdown

Markdown is a simple formatting syntax that allows you to do common formatting with ease. Pandoc is a feature rich interpreter that helps you convert documents from one format to anther. If you are writing homework, research papers, or anything that needs citation and a bibliography, you can totally use Markdown and Pandoc to achieve that. Below is a set of instructions that you can follow to generate a document with in-text citation and bibliography. First, install Pandoc and the extension for creating citation ( pandoc-citeproc ).  There are several ways to install Pandoc, you can choose one of them recommended on the official website . On Mac, one way is to install Homebrew , a package manager, and then use Homebrew to install Pandoc and the extension. For Windows users, please refer the official website on how to install Pandooc and extension. Here I will show how to install Pandoc and the extension for citation through Homebrew. After installing homebrew, you can ...
Post a Comment
Read more