🌐 Mailman 3 February 2017 - Python-list - python.org

Re: Modify Setup
by Bryan Carey Feb. 6, 2017

Feb. 6, 2017

Good evening! I just installed both python 3.4 & the PyCharm IDE this evening. While trying to run a simple "Hello World" program, I keep getting "Modify Setup" pop up windows. In addition to that, the output of my program is not displayed. Could you help me resolve my issue? On Sat, Feb 4, 2017 at 3:25 PM, Bryan Carey <bcare003(a)odu.edu> wrote: > Good evening! I just installed both python 3.4 & the PyCharm IDE this > evening. While trying to run a simple "Hello World" program, I keep getting > "Modify Setup" pop up windows. In addition to that, the output of my > program is not displayed. Could you help me resolve my issue? > > On Fri, Feb 3, 2017 at 7:00 PM, Bryan Carey <bcare003(a)odu.edu> wrote: > >> Good evening! I just installed both python 3.4 & the PyCharm IDE this >> evening. While trying to run a simple "Hello World" program, I keep getting >> "Modify Setup" pop up windows. In addition to that, the output of my >> program is not displayed. Could you help me resolve my issue? >> > >

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Get Result based on the Top value
by Meeran Rizvi Feb. 6, 2017

Feb. 6, 2017

Hello guys, Here i am creating a GUI which will act as a search engine. When you search for a data in search box it will fetch the results from the very first page in browser and it is displayed in a Text widget When the TOP value is 10 it should display only the first 10 results based on numbers.if it is 20 it should display first 20 results based on the number. How should i do that? Here is my script <python> from Tkinter import * import mechanize from bs4 import BeautifulSoup root = Tk() def clear_search():#Reset the search field Search.delete(0,END) Result.delete("1.0",END) def fun(self=0): new = Search.get() url = "https://duckduckgo.com/" br = mechanize.Browser() br.set_handle_robots(False) br.open(url) br.select_form(name="x") br["q"] = str(new) res = br.submit() content = res.read() #print content soup = BeautifulSoup(content,"html.parser") mylink = soup.find_all('a') v = 0 for i in mylink: try: if i.attrs['class'][0] == "result__a": v = v + 1 Result.insert(END,v) Result.insert(END,i.text) Result.insert(END,'\n') elif i.attrs['class'][0] == "result__snippet": Result.insert(END,i.text) Result.insert(END,'\n') Result.insert(END,i.attrs['href']) Result.insert(END,'\n ') Result.insert(END,'--------------------------------------------------------------------------') except KeyError: pass with open("result1.xls", "w") as f: f.write(content) Value = Label(root,text="Value:", font="-weight bold") Value.grid(row=0,column=0,padx=15) Search = Entry(root,width=50) Search.grid(row=0,column=1) Top = Label(root,text="TOP",font="-weight bold") Top.grid(row=1,column=0) var = StringVar(root) var.set('10') Dropdownlist = OptionMenu(root,var,'10','20','50','100') Dropdownlist.grid(row=1,column=1,sticky="w") Go = Button(root,text="GO",width=5,command=fun) Go.bind("<Key>",fun) Go.grid(row=1,column=1) Reset = Button(root,text="RESET",width=5,command=clear_search) Reset.grid(row=1,column=1,sticky="e") Result = Text(root,height=20,width=75) Result.grid(row=2,column=1,padx=50,pady=10) Scroll = Scrollbar(root,command=Result.yview) Scroll.grid(row=2,column=2,sticky=N+S) Result.config(yscrollcommand=Scroll.set) root.mainloop() </python>

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Python installer hangs in Windows 7
by Jean-Claude Roy Feb. 6, 2017

Feb. 6, 2017

I am trying to install Python 3.6.0 on a Windows 7 computer. The download of 29.1 MB is successful and I get the nextwindow. I choose the "install now" selection and thatopens the Setup Program window. Now the trouble starts:I get "Installing:" and the Initialization progress...and nothing else. There is no additional disk activity, no progress on initialization, andeverything appears dead. Even after 20 minutes there is zero progress. I've repeated this as both a user and the administrator of this Windowscomputer. I get the same results in either case. If I go to the task manager it shows that Python 3.6.0 (32-bit) setup is running. If I try to end the task Iget the message that the program is not responding. Do you have any suggestions as to how I can get past this? Thank you.

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Re: best way to ensure './' is at beginning of sys.path?
by Wildman Feb. 6, 2017

Feb. 6, 2017

On Sat, 04 Feb 2017 19:12:55 +0000, Grant Edwards wrote: > On 2017-02-04, Wildman via Python-list <python-list(a)python.org> wrote: >>> >>> The next time you are in the /tmp directory looking for something, can >>> you guess what happens when you mistype "ls" as "sl"? >>> >>>> DOS and Windows has searched the current directory since their >>>> beginning. Is that also dangerous? >>> >>> Yes. >> >> Your scenario assumes the malicious user has root access >> to be able to place a file into /tmp. > > Nope. /tmp is world-writable. Yea, I realized that right after I clicked post. I was thinking of the fact that /tmp is owned by root. >> And there would have to be some reason why I would be looking around >> in /tmp. After 10 years of using Linux, it hasn't happened yet. >> And last I would have to be a complete idiot. > > To have put '.' in your path? That is something I would never do. Not because I think it is dangerous but because it had never occurred to me. Anything that I run in the current directory, I always prefix it with './' out of habit. Never thought of doing anything else. > Or to have typed 'sl' by mistake? Well, maybe not an idiot but something would have to be going on to misspell a two letter command. <g> >> I suppose all that could be a reality, but, how many computers do >> you know of have been compromised in this manor? > > I've known a few people over the years who've been caught by that > trick. The "evil" program was always more of a joke and did no real > harm. I don't consider that being compromised. Sure, you could trick someone into running a program that could mess with $HOME but that is all. For anyone, like me, that makes regular backups, that is not a big problem. To do any real damage to the system or install a key logger or some other malicious software, root access would be required. As a Linux user you already know that. That is the scenario where idiot would be the correct term. -- <Wildman> GNU/Linux user #557453 The cow died so I don't need your bull!

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Python: How do I resolve oauth2client.client.ApplicationDefaultCredentialsError: The Application Default Credentials are not available?
by david.amadi＠digital.beis.gov.uk Feb. 6, 2017

Feb. 6, 2017

Hello All, I’m a newbie to python programming – got into it predominately for the purposes of machine learning and data mining and even though I’ve committed several weeks to learning the scripting language, I have struggled to fully grasp how it works. I’m looking to scrape title, video Id, view Count, like Count, dislike Count, comment Count, favourite Count etc off YouTube using a python script I found via an online tutorial. I have installed ‘unidecode’ and 'google-api-python-client' packages via my terminal. I have also enabled YouTube Data Api V3 and I’m getting the error below each time I run the script. Could anyone please point me in the right direction? Thanks a lot in advance for your help **** Traceback (most recent call last): File "/Users/*Path*/ML with Python/youtube_search.py", line 73, in <module> youtube_search(args) File "/Users/*Path*/ML with Python/youtube_search.py", line 21, in youtube_search youtube = build(YOUTUBE_API_SERVICE_NAME, YOUTUBE_API_VERSION, developerKey=DEVELOPER_KEY) File "/Users/*Path*/anaconda/lib/python3.5/site-packages/oauth2client/_helpers.py", line 133, in positional_wrapper return wrapped(*args, **kwargs) File "/Users/*Path*/anaconda/lib/python3.5/site-packages/googleapiclient/discovery.py", line 226, in build credentials=credentials) File "/Users/*Path*/anaconda/lib/python3.5/site-packages/oauth2client/_helpers.py", line 133, in positional_wrapper return wrapped(*args, **kwargs) File "/Users/*Path*/anaconda/lib/python3.5/site-packages/googleapiclient/discovery.py", line 358, in build_from_document credentials = _auth.default_credentials() File "/Users/*Path*/anaconda/lib/python3.5/site-packages/googleapiclient/_auth.py", line 41, in default_credentials return oauth2client.client.GoogleCredentials.get_application_default() File "/Users/*Path*/anaconda/lib/python3.5/site-packages/oauth2client/client.py", line 1264, in get_application_default return GoogleCredentials._get_implicit_credentials() File "/Users/*Path*/anaconda/lib/python3.5/site-packages/oauth2client/client.py", line 1254, in _get_implicit_credentials raise ApplicationDefaultCredentialsError(ADC_HELP_MSG) oauth2client.client.ApplicationDefaultCredentialsError: The Application Default Credentials are not available. They are available if running in Google Compute Engine. Otherwise, the environment variable GOOGLE_APPLICATION_CREDENTIALS must be defined pointing to a file defining the credentials. See https://developers.google.com/accounts/docs/application-default-credentials for more information. -- Communications with the Department for Business, Innovation and Skills may be automatically logged, monitored and/or recorded for legal purposes.

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Beginner help
by phaas3＠u.rochester.edu Feb. 6, 2017

Feb. 6, 2017

Hi everyone. I'm new to python and have hit a bit of a wall with an assignment I'm working on. I created a number of classes and instantiated them, now I need to create a list out of them. I am looking for something more elegant than appending each object to the list as I instantiate it. I tried setting up an if loop, but didn't get far with it. Any suggestions?

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Re: best way to ensure './' is at beginning of sys.path?
by Wildman Feb. 5, 2017

Feb. 5, 2017

On Sat, 04 Feb 2017 09:25:42 +1100, Cameron Simpson wrote: > On 03Feb2017 14:55, Wildman <best_lay(a)yahoo.com> wrote: >>On Fri, 03 Feb 2017 13:19:30 -0700, Michael Torrie wrote: >> >>> On 02/03/2017 12:07 PM, Wildman via Python-list wrote: >>>> Sorry, I forgot something important. If you use >>>> /etc/rc.local, the execute bit must be set. >>> >>> I don't think this is what Neal Becker was asking about. He's talking >>> about the Python module search path (sys.path) not the operating system >>> PATH variable. Correct me if I'm wrong. >> >>After re-reading the post I see you are correct. >>I will endeavor to read a little closer and a >>little slower in the future. > > Also, what you describe with rc.local wouldn't work anyway, even if it had ben > what was asked. > > Cheers, > Cameron Simpson <cs(a)zip.com.au> Of course, you are correct. I don't know where my head was. I think my tongue got in front of my eye teeth and I could not see what I was saying. :-) If anyone is interested the correct way is to add this to /etc/profile (at the bottom): PATH=$PATH:./ export PATH -- <Wildman> GNU/Linux user #557453 The cow died so I don't need your bull!

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Re: best way to ensure './' is at beginning of sys.path?
by Wildman Feb. 5, 2017

Feb. 5, 2017

On Sat, 04 Feb 2017 18:25:03 +0000, Grant Edwards wrote: > On 2017-02-04, Wildman via Python-list <python-list(a)python.org> wrote: > >> No, I do not know. You might try your question in a linux specific >> group. Personally I don't understand the danger in having the dot >> in the path. The './' only means the current directory. > > It allows a malicous user to put an evil executable someplace public > like /tmp and have it executed accidentally. For example, let's say > this executable file was named "sl" and placed in /tmp. > > ------------------------------sl------------------------------ > #!/bin/bash > rm -rf $HOME > -------------------------------------------------------------- > > The next time you are in the /tmp directory looking for something, can > you guess what happens when you mistype "ls" as "sl"? > >> DOS and Windows has searched the current directory since their >> beginning. Is that also dangerous? > > Yes. Your scenario assumes the malicious user has root access to be able to place a file into /tmp. And there would have to be some reason why I would be looking around in /tmp. After 10 years of using Linux, it hasn't happened yet. And last I would have to be a complete idiot. I suppose all that could be a reality, but, how many computers do you know of have been compromised in this manor? -- <Wildman> GNU/Linux user #557453 The cow died so I don't need your bull!

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best way to ensure './' is at beginning of sys.path?
by Neal Becker Feb. 4, 2017

Feb. 4, 2017

I want to make sure any modules I build in the current directory overide any others. To do this, I'd like sys.path to always have './' at the beginning. What's the best way to ensure this is always true whenever I run python3?

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Re: best way to ensure './' is at beginning of sys.path?
by Marko Rauhamaa Feb. 4, 2017

Feb. 4, 2017

Grant Edwards <grant.b.edwards(a)gmail.com>: > It allows a malicous user to put an evil executable someplace public > like /tmp and have it executed accidentally. For example, let's say > this executable file was named "sl" and placed in /tmp. > > ------------------------------sl------------------------------ > #!/bin/bash > rm -rf $HOME > -------------------------------------------------------------- > > The next time you are in the /tmp directory looking for something, can > you guess what happens when you mistype "ls" as "sl"? There's also the reverse problem. Unix/Linux users are accustomed to writing their own handy scripts and placing them under ~/bin, where the default PATH will pick them up. Now, a Linux system has numerous system commands; on mine: $ ls /usr/bin | wc -l 1790 Nobody can know that most of those commands even exist, so there's a good possibility that the user's private script accidentally shadows with one of the system commands. So if a system command were implemented as a shell script (as many of them are) that depended on other commands along PATH, it would start behaving in a random fashion when the user's personal script got launched accidentally. Example: ===Begin /usr/bin/c89=================================================== #!/bin/sh fl="-std=c89" for opt; do case "$opt" in -ansi|-std=c89|-std=iso9899:1990) fl="";; -std=*) echo "`basename $0` called with non ANSI/ISO C option $opt" >&2 exit 1;; esac done exec gcc $fl ${1+"$@"} ===End /usr/bin/c89===================================================== If I were to write a script called "~/bin/gcc", the "c89" command might start working in unexpected ways. A particularly nasty risk is to write a program called "test" and place it along PATH. The "test" system command is used all over the place. Now, that's why the distros are careful to place $HOME/bin as the final entry of PATH; the system commands take precedence over the user's personal ones. However, the user is free to define the PATH any way they like. There's a school of thought that a script should never rely on PATH but it should spell out the complete path of every command it executes (including "mv", "cp", "rm" and the like). The problem with that approach is that different distros have core commands in different directories. Marko

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