a question about this python script! -

- 

if __name__=="__main__":     fname= raw_input("please enter file:")     mtrue=1     salaries=''     salarieslist={}     employeesdept=''     employeesdeptlist={}     try:         f1=open(fname)     except:         mtrue=0         print 'the %s not exist!'%fname     if mtrue==1:         ss=[]            x in f1.readlines():             if 'salaries' in x:                 salaries=x.strip()             elif 'employees' in x:                 employeesdept=x.strip()         f1.close()         if salaries , employeesdept:             salaries=salaries.split('-')[1].strip().split(' ')             d in salaries:                 s=d.strip().split(':')                 salarieslist[s[0]]=s[1]             employeesdept=employeesdept.split('-')[1].strip().split(' ')             d in employeesdept:                 s=d.strip().split(':')                 employeesdeptlist[s[0]]=s[1]             print "1) average salary in company: %s "%salarieslist['avg']                         print "2) maximum , minimum salaries in company: maximum:%s,minimum:%s "%(salarieslist['max'],salarieslist['min'])             print "3) how many employees there in each department :it:%s, development:%s, administration:%s"%(                 employeesdeptlist['it'],employeesdeptlist['development'],employeesdeptlist['administration'])           else:             print 'the %s data err!'%fname

when enter filename, didn't continue, why? if enter file named company.txt, show file not exist. why?

i can give hints can resolve problem better

create function , call in main e.g. 

if __name__=="__main__":     main()

don't put whole block under if mtrue==1: instead return function on error e.g.

def main():     fname= raw_input("please enter file:")     try:         f1=open(fname)     except:         print 'the %s not exist!'%fname         return      ... # main code here

never catch exceptions , instead catch specific exception e.g. ioerror

try:    f1 = open(fname): except ioerror,e:   print 'the %s not exist!'%fname

otherwise catching exception may catch syntax error or mis-spelled names etc

print exception getting, may not file not found, may don't have read permission or that

and problem that, file may not exist, try input full path


Comments

Post a Comment

Popular posts from this blog

android - Spacing between the stars of a rating bar? -

-
ho can set spacing beween stars? thats ratingbar: ratingbar = (ratingbar) inflater.inflate(r.layout.ratingbar, null); ratingbar.setlayoutparams(new layoutparams(layoutparams.wrap_content, layoutparams.wrap_content)); the layout: <?xml version="1.0" encoding="utf-8"?> <ratingbar xmlns:android="http://schemas.android.com/apk/res/android" style="@style/mystyle" android:layout_alignparentright="true" android:layout_height="19dp" android:layout_width="wrap_content" android:numstars="5"> </ratingbar> the style: <style name="mystyle" parent="@android:style/widget.ratingbar"> <item name="android:progressdrawable">@drawable/android_r2_ratingstar_yellow</item> <item name="android:indeterminatedrawable">@drawable/android_r2_ratingstar_grey</item> </style> thanks, cheers you have
Read more

html - Instapaper-like algorithm -

-
does of algorithm extracts contents webpage? instapaper ? there 2 steps instapaper does: find main content block on page (excluding headers, footers, menus etc) from content block extract , format text to find content block (typically html block element, div containing key page text content) instapaper uses algorithm 1 used readability . can @ source of readability.js see what's going on, @ core tries find area on page highest text/link ratio, although has other simple scoring metrics (e.g. off top of head, things ratio of text commas, para elements etc) go heuristics. once have identified root node element, relevant content, you'll need format it, if want can pull node element containing text out of source document , insert yours, in reality you'll want remove existing styles , apply own, standard , feel. if want output nice text-only can use jericho's renderer . update1 : should mention else instapaper - follow 'pagination' links (
Read more

c# - How to execute a particular part of code asynchronously in a class -

-
i creating speech recognition engine that's going respond user commands.i have created button enable , disable speech recognition per user convenience.i have used dispose() of speech engine disable speech recoginition.here code private void button1_click(object sender, routedeventargs e) { engineon = !engineon; if (engineon) { speechengine = speech.createspeechengine(); //speech class creates , returns new speech engine. speechengine.audiolevelupdated += new eventhandler<audiolevelupdatedeventargs>(speechengine_audiolevelupdated); // use system's default microphone speechengine.setinputtodefaultaudiodevice(); speechengine.loadgrammar(new dictationgrammar()); // start listening speechengine.recognizeasync(recognizemode.multiple); } else { speechclass.myengine.dispose(); } } but disposal of speech obj
Read more