Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!eternal-september.org!feeder.eternal-september.org!feeds.phibee-telecom.net!newsfeed.xs4all.nl!newsfeed3.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.001 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; '"this': 0.03; 'syntax': 0.04; 'beginner': 0.05; 'i?m': 0.05; 'odd': 0.07; 'suppose': 0.07; 'subject:help': 0.08; 'string': 0.09; '[1,': 0.09; 'can?t': 0.09; 'seen,': 0.09; 'subject:command': 0.09; 'way:': 0.09; 'you?ve': 0.09; 'python': 0.11; 'language,': 0.12; '->': 0.16; 'all?': 0.16; 'command,': 0.16; 'examples?': 0.16; 'googled': 0.16; 'googling': 0.16; 'mean,': 0.16; 'new[,': 0.16; 'number?': 0.16; 'project)': 0.16; 'subject:description': 0.16; 'all.': 0.16; 'everyone,': 0.19; 'it?s': 0.19; 'written': 0.21; 'help.': 0.21; 'command': 0.22; 'example': 0.22; 'print': 0.22; 'finally,': 0.24; 'instance,': 0.24; 'earlier': 0.24; 'question': 0.24; 'purposes': 0.26; 'this:': 0.26; 'function': 0.29; 'appreciated.': 0.29; 'list:': 0.30; "i'm": 0.30; 'getting': 0.31; '(maybe': 0.31; 'parameters.': 0.31; 'sites.': 0.31; 'skip:? 10': 0.33; 'problem': 0.35; 'knowledge': 0.35; "can't": 0.35; 'but': 0.35; 'received:google.com': 0.35; 'url:rec-html40': 0.35; 'really': 0.36; 'idle': 0.36; 'skip:> 10': 0.36; "didn't": 0.36; 'charset :us-ascii': 0.36; 'thanks': 0.36; "i'll": 0.36; 'url:org': 0.36; 'url:microsoft': 0.37; 'list': 0.37; 'clear': 0.37; 'message- id:@gmail.com': 0.38; 'skip:& 10': 0.38; 'question,': 0.38; 'subject:needed': 0.38; 'url:office': 0.38; 'to:addr:python-list': 0.38; 'url:schemas': 0.38; 'url:omml': 0.39; 'url:2004': 0.39; 'skip:& 20': 0.39; "couldn't": 0.39; 'subject:" ': 0.39; 'use.': 0.39; 'url:12': 0.39; 'to:addr:python.org': 0.39; 'how': 0.40; 'even': 0.60; 'skip:u 10': 0.60; 'numbers': 0.61; 'range': 0.61; "you've": 0.63; 'more': 0.64; 'different': 0.65; 'here': 0.66; 'skip:w 30': 0.69; 'received:109': 0.72; 'obvious': 0.74; 'introduce': 0.78; '^_^': 0.84; 'examples.': 0.84; 'that?s': 0.84; 'contents.': 0.91; 'write:': 0.91 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:subject:date:message-id:mime-version:content-type :thread-index:content-language; bh=YmNKoAo270uZyfLboyPcMvXdrNyvVXiD3exQUzYcR5w=; b=WVKQOehntVMNI23RytVh7AA+X5r5ufc7Z8xjiwOhnxoHEMHUz2gZlqEDKIIm0Ft+AL nxyykmnDCKanXcijGVtbszpNpakDnoQZmZtYil51zjvCijks9U21MBhUdYCoxoXsGqmq Sdyp4PuAbqy7kVkQqxa3G77Zw8kBOfMgrP4eb6E34mcuvtjxdgz4CikI6I2mXT446f5W LRjNPh4CJcJzw3lHzwHffrYvp1IjanUsIvzANElUl2mAxAKEvo71eQsEjxIAETNSUpi7 ZZ0FJ1IrZE12Gr+7S66tuLYKqvaNhqHO4KXIY/T/7194ePu7exEG5DqX5Y5kUOmR9PHV ECTA== X-Received: by 10.194.248.162 with SMTP id yn2mr10564234wjc.16.1415185259988; Wed, 05 Nov 2014 03:00:59 -0800 (PST) From: "Ivan Evstegneev" To: Subject: Understanding "help" command description syntax - explanation needed Date: Wed, 5 Nov 2014 13:00:16 +0200 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01CFF8F8.72DBD0A0" X-Mailer: Microsoft Outlook 14.0 Thread-Index: Ac/456sldZmAQz40R3uDMxojroxaqQ== Content-Language: en-us X-Mailman-Approved-At: Wed, 05 Nov 2014 12:41:17 +0100 X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 274 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1415187679 news.xs4all.nl 2934 [2001:888:2000:d::a6]:57467 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:80257 This is a multipart message in MIME format. ------=_NextPart_000_0001_01CFF8F8.72DBD0A0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Hello everyone, I'm a Python beginner and just getting familiar with it. (I need it for my EE B.Sc. project) For the learning purposes I use IDLE and (Learning Python by written by Mark Lutz). Let's say that I have some earlier experience with C language, but still Python is a different one ))) Anyway, the question I would like to ask is about understanding "help" contents. It may look to obvious and even a dumb question, but still I need your help. Here is a brief background with example in order to introduce my problem in more clear way: Suppose I get some list created: >>>L=[i for i in range(1,15,2)] As it can be seen, this is the odd numbers list: [1, 3, 5, 7, 9, 11, 13] Supppose I need to check the occurrence of number 7, in this case I'll just write: >>>L.index(7) The result is :3 So here is the question itself: If I use the help command to check the "range" command I get this info: range(stop) -> range object range(start, stop[, step]) -> range object As you've seen in my example I used range(1,15,2). But this knowledge I got from googling a couple of sites. I still can't understand the "help" command description. For instance, how do I need to understand that (start,stop[,step]) it's just a three numbers? What do those brackets--> [,] mean? The same about "str.replace" command, where I get this: S.replace(old, new[, count]) - using this description I can't really understand how to write the "replace" function parameters. So I googled it up and found this example in order to get more clear understanding of command use. str = "this is string example....wow!!! this is really string" print str.replace("is", "was") print str.replace("is", "was", 3) The result: thwas was string example....wow!!! thwas was really string thwas was string example....wow!!! thwas is really string But still how do I know that those "old, new" are the strings and [,count] just a number? I mean, it was more naturally(as a baginner) to me to write str.replace(is,was[,3]) and that's all. Finally, as for my opinion, this is a lame way to learn "what a command do" by constantly googling it for examples. I need to get more familiar with "help", but the main problem, is that I couldn't find any suitable explanations/tutorials about "help" syntax and etc. (maybe didn't search well). Any explanations/links will be greatly appreciated. I need some help for "help" ^_^ Thanks in advance, Ivan. ------=_NextPart_000_0001_01CFF8F8.72DBD0A0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hello = everyone,

 

I’m a Python beginner and just getting familiar = with it. (I need it for my EE B.Sc. project)

For the learning purposes I use IDLE and (Learning = Python by written by Mark Lutz).

Let’s say that I have some earlier experience = with C language, but still Python is a different one = )))

 

Anyway, the question I would like to ask is about = understanding “help” contents.

It may look to obvious and even a dumb question, but = still I need your help.

 

Here is a = brief background with example in order to introduce my problem in more = clear way:

 

Suppose I get some list created:

 

>>>L=3D[i for i in = range(1,15,2)]

As it can be seen, = this is the odd numbers list: [1, 3, 5, 7, 9, 11, 13]

 

Supppose I = need to check the occurrence of number 7, in this case I’ll just = write:

>>>L.index(7)

The result is :3

 

So here is = the question itself:

If I use the = help command to check the “range” command I get this info: =

 

range(stop) -> range object

range(start, stop[, step]) -> range = object

 

As you’ve seen in my example I used = range(1,15,2). But this knowledge I got from googling a couple of = sites.

I still can’t understand = the “help” command description.

For instance, how do I need to understand that = (start,stop[,step])  it’s just a three numbers? =

What do those brackets--> [,] = mean?

 

The same about “str.replace” command, = where I get this:

 

S.replace(old, new[, count]) – using this = description I can’t really understand how to write the = “replace” function parameters…

 

So I googled = it up and found this example in order to get more clear understanding of = command use.

 

str =3D "this is string example....wow!!! this is = really string"

print = str.replace("is", "was")

print str.replace("is", "was", = 3)

 

The result:

thwas = was string example....wow!!! thwas was really string

thwas was string example....wow!!! thwas is really = string

 

But still how do I know that those “old, = new” are the strings and [,count] just a number?

 I mean, it was more naturally(as a baginner) to = me to write str.replace(is,was[,3]) and that’s all… =

 

 

Finally, as = for my opinion, this is a lame way to learn  “what a command = do” by constantly googling it for examples… =

 

I need to get more familiar with “help”, = but the main problem, is that I couldn’t find any suitable = explanations/tutorials about “help” syntax and etc. (maybe = didn’t search well).

 

Any = explanations/links will be greatly appreciated. I need some help for = “help” ^_^

 

Thanks in = advance,

 

Ivan.   

 

 

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