Unknown errors, RSS feed

bhass

From my other post I am making a simple program that creates an RSS feed with Python. Now when I run my program so far, I get errors. It says "something is not defined". The word something is replaced by the name of the function I'm trying to use. my article function when ran, comes up with "article is not defined" etc.

Here's my code: What is wrong with it?

Expand|Select|Wrap|Line Numbers

 #!/usr/bin/env python

import ftplib

import getpass
 
def mainfeed():

    name=raw_input("Name of Feed: ")

    desc=raw_input("Description of Feed: ")

    url=raw_input("Location of Website: ")

    again()
 
def again():

    again=raw_input("Would you like to add an article to the feed? Y/N: ")

    if again == "Y":

        article()

    elif again =="N":

        writeb()

    else:

        print again + """is not a valid option. You must select either 'Y' or 'N'"""

        fail()
 
def fail():

    again()
 
def article():

    aname=raw_input("Name of Article: ")

    adesc=raw_input("Description of Article: ")

    aurl=raw_input("Location of Article: ")

    finish()
 
def finish():

    print "Saving parameters to rss-feed.xml...please wait..."

    print "Finished"   

    writea()
 
def writea():

    file_name = "rss-feed.xml"

    f = open(file_name, 'w')

    outlist = ['<?xml version="1.0" encoding="ISO-8859-1" ?>', '<rss version="0.91">',]

    outlist.append('  <channel>\n    <title>%s</title>' % name)

    outlist.append('    <link>%s</link>' % url)

    outlist.append('    <description>%s</description>' % desc)

    outlist.append('    <item>\n        <title>%s</title>' % aname)

    outlist.append('        <link>%s</link>' % aurl)

    outlist.append('        <description>%s</description>' % adesc)

    outlist.append('    </item>')

    outlist.append('  </channel>')

    outlist.append('</rss>')  

    f.write('\n'.join(outlist))

    f.close()

    ftpqe()
 
def writeb():

    file_name = "rss-feed.xml"

    f = open(file_name, 'w')

    outlist = ['<?xml version="1.0" encoding="ISO-8859-1" ?>', '<rss version="0.91">',]

    outlist.append('  <channel>\n    <title>%s</title>' % name)

    outlist.append('    <link>%s</link>' % url)

    outlist.append('    <description>%s</description>' % desc)

    outlist.append('  </channel>')

    outlist.append('</rss>')  

    f.write('\n'.join(outlist))

    f.close()

    ftpqe()
 
def ftpqe():

    ftpq=raw_input("Do you want to upload your XML file to your website via FTP? Y/N: ")

    if ftpq == "Y":

        ftp()

    elif ftpq =="N":

        end()

    else:

        print again + """is not a valid option. You must select either 'Y' or 'N'"""

        fail2()
 
def fail2():

    ftpqe()
 
def ftp():

    server=raw_input("Server name: ")

    login=raw_input("Enter your login: ")

    password = getpass.unix_getpass("Enter your password: ")

    ftplib.FTP(server,login,password)

    f = open('rss-feed.xml','rb') 

    s.storbinary('STOR rss-feed.xml', f)

    f.close()

    s.quit()

    print "Your file has been uploaded"

    end()
 
def end():

    print "Thank you"
 
mainfeed()

bvdet

In this line:

Expand|Select|Wrap|Line Numbers

s.storbinary('STOR rss-feed.xml', f)

I don't see where s is defined. It would be helpful if you would post the exact error message and include all tracebacks. If you are not seeing this information, try enclosing your code in a try/except block similiar to this:

Expand|Select|Wrap|Line Numbers

 import sys, traceback
 
def formatExceptionInfo(level=6):

    error_type, error_value, trbk = sys.exc_info()

    info_list = ["Error: %s \nDescription: %s \nTraceback:\n" % (error_type.__name__, error_value), ]

    info_list.extend(traceback.format_tb(trbk, level))

    return ''.join(info_list)
 
try:

    mainfeed()

except:

    print formatExceptionInfo()

bhass

Here are the errors I get so far:

No 1:

Expand|Select|Wrap|Line Numbers

 Name of Feed: test

Description of Feed: test

Location of Website: test

Would you like to add an article to the feed? Y/N: N

Traceback (most recent call last):

  File "rssgps.py", line 93, in <module>

    mainfeed()

  File "rssgps.py", line 9, in mainfeed

    again()

  File "rssgps.py", line 16, in again

    writeb()

  File "rssgps.py", line 56, in writeb

    outlist.append('  <channel>\n    <title>%s</title>' % name)

NameError: global name 'name' is not defined

no 2

Expand|Select|Wrap|Line Numbers

 
Name of Feed: test

Description of Feed: test

Location of Website: test

Would you like to add an article to the feed? Y/N: Y

Name of Article: test

Description of Article: test

Location of Article: test

Saving parameters to rss-feed.xml...please wait...

Finished

Traceback (most recent call last):

  File "rssgps.py", line 93, in <module>

    mainfeed()

  File "rssgps.py", line 9, in mainfeed

    again()

  File "rssgps.py", line 14, in again

    article()

  File "rssgps.py", line 28, in article

    finish()

  File "rssgps.py", line 33, in finish

    writea()

  File "rssgps.py", line 39, in writea

    outlist.append('  <channel>\n    <title>%s</title>' % name)

NameError: global name 'name' is not defined

I have more on the functions that are executed later on in the script, but this is so far.

But name IS defined, from the raw input at the start of the mainfeed function!

bvdet

It is a matter of scope and the way Python resolves names. When a function executes, a new namespace is created which includes the names of the function parameters and variables assigned in the function. When resolving names, the interpreter first checks the local namespace, in this case, the namespace created by the function. If no match is found, it checks the global namespace. The global namespace is always the module which defines the function. If no match is found, it checks the built-in namespace before raising a NameError exception. As you can see, the interpreter never checks the namespaces of the other functions in your module. You must make the variable names global or pass arguments to your functions.

bhass

@bvdet
Thanks! I'll make them global now, and then I'll post the other errors later. That's one bit solved.

bhass

Expand|Select|Wrap|Line Numbers

 
#!/usr/bin/env python

import ftplib

import getpass
 
name=raw_input("Name of Feed: ")

desc=raw_input("Description of Feed: ")

url=raw_input("Location of Website: ")

print "Your main feeds settings have been updated"

print "Now information about adding an article to the feed.Other articles can be added manually later"

aname=raw_input("Name of Article: ")

adesc=raw_input("Description of Article: ")

aurl=raw_input("Location of Article: ")

finish()
 
def finish():

    print "Saving parameters to rss-feed.xml...please wait..."

    print "Finished"   

    writea()
 
def writea():

    file_name = "rss-feed.xml"

    f = open(file_name, 'w')

    outlist = ['<?xml version="1.0" encoding="ISO-8859-1" ?>', '<rss version="0.91">',]

    outlist.append('  <channel>\n    <title>%s</title>' % name)

    outlist.append('    <link>%s</link>' % url)

    outlist.append('    <description>%s</description>' % desc)

    outlist.append('    <item>\n        <title>%s</title>' % aname)

    outlist.append('        <link>%s</link>' % aurl)

    outlist.append('        <description>%s</description>' % adesc)

    outlist.append('    </item>')

    outlist.append('  </channel>')

    outlist.append('</rss>')  

    f.write('\n'.join(outlist))

    f.close()

    ftpqe()
 
def writeb():

    file_name = "rss-feed.xml"

    f = open(file_name, 'w')

    outlist = ['<?xml version="1.0" encoding="ISO-8859-1" ?>', '<rss version="0.91">',]

    outlist.append('  <channel>\n    <title>%s</title>' % name)

    outlist.append('    <link>%s</link>' % url)

    outlist.append('    <description>%s</description>' % desc)

    outlist.append('  </channel>')

    outlist.append('</rss>')  

    f.write('\n'.join(outlist))

    f.close()

    ftpqe()
 
def ftpqe():

    ftpq=raw_input("Do you want to upload your XML file to your website via FTP? Y/N: ")

    if ftpq == "Y":

        ftp()

    elif ftpq =="N":

        end()

    else:

        print again + """is not a valid option. You must select either 'Y' or 'N'"""

        fail2()
 
def fail2():

    ftpqe()
 
def ftp():

    server=raw_input("Server name: ")

    login=raw_input("Enter your login: ")

    password = getpass.unix_getpass("Enter your password: ")

    ftplib.FTP(server,login,password)

    f = open('rss-feed.xml','rb') 

    s.storbinary('STOR rss-feed.xml', f)

    f.close()

    s.quit()

    print "Your file has been uploaded"

    end()
 
def end():

    print "Thank you for using "

I changed it to this now, the names and article names have been made global, and now I get this error. It's this I don't understand the most, because finish is obviously a function. error:

Expand|Select|Wrap|Line Numbers

 
Traceback (most recent call last):

  File "rssgps.py", line 13, in <module>

    finish()

NameError: name 'finish' is not defined

Do I misunderstand functions?

bvdet

You have to define it before you call it.

Expand|Select|Wrap|Line Numbers

 
def finish():

    ....do stuff....
 
finish()

bhass

Thanks once again, you've really helped me. Now 1 final question.
Everything works apart from the FTP. This is the error:

Expand|Select|Wrap|Line Numbers

 
Do you want to upload your XML file to your website via FTP? Y/N: Y

Server name: test

Enter your login: test

Enter your password: 

Traceback (most recent call last):

  File "rssgps.py", line 76, in <module>

    finish()

  File "rssgps.py", line 8, in finish

    writea()

  File "rssgps.py", line 25, in writea

    ftpqe()

  File "rssgps.py", line 43, in ftpqe

    ftp()

  File "rssgps.py", line 57, in ftp

    ftplib.FTP(server,login,password)

  File "/usr/lib/python2.5/ftplib.py", line 107, in __init__

    self.connect(host)

  File "/usr/lib/python2.5/ftplib.py", line 117, in connect

    for res in socket.getaddrinfo(self.host, self.port, 0, socket.SOCK_STREAM):

socket.gaierror: (-2, 'Name or service not known')

Any ideas? Thanks

bvdet

You did not assign the ftplib.FTP object to a variable. Try this:

Expand|Select|Wrap|Line Numbers

 
    s = ftplib.FTP(server,login,password)

    f = open('rss-feed.xml','rb') 

    s.storbinary('STOR rss-feed.xml', f)

    f.close()

    s.quit()

If that is not the problem, you may have an incorrect server name or user name. This worked for me on my FTP server:

Expand|Select|Wrap|Line Numbers

 >>> import ftplib

>>> f = ftplib.FTP('ftp.bvdetailing.com', '*********', '********')

>>> f.mkd('ftplib_test')

'ftplib_test'

>>> f.close()

>>>

bhass

Yet again, thank you. I can only keep thanking you!

bvdet

You're welcome. You did a good job of defining your problem and seeing the thread through. Fortunately, I was able to help.

-BV

Unknown errors, RSS feed

Post your reply

Similar topics

Question stats

	Ask Question
Home Questions Articles Browse Topics Latest Top Members FAQ