brand new to python

R

richard.hubbell

I am sure this is old news, the syntax of python is crazy to me.
There I said it, I'm sure I'll get over it or around it.

I was trying to make a whois script work and was unable.

May be someone with lint-like eyes can tell what's wrong.

Using xemacs I had hoped that python mode would do more
for syntax problems, maybe I'm just not using python mode
correctly in xemacs??

../whois.py yahoo.com
File "./whois.py", line 117
class DomainRecord:
^
SyntaxError: invalid syntax


#!/usr/bin/env python


#usage: %(progname)s [--test] [domain...]

#Version: %(version)s

#Contacts the NetworkSolutions whois database for each domain and
displays
#the result.

#public methods:

# def whois(domainname, whoisserver=None, cache=0)
# raises NoSuchDomain if the domain doesn't exist.

# return the result of contacting NetworkSolutions

#def ParseWhois(page)
# returns a DomainRecord object that contains a parsed
#version of the information contained in 'page'.

#class DomainRecord:
# self.domain -- name of the domain
#self.domainid -- domainid for this domain
# self.created -- date in which the domain was created
# self.lastupdated -- date in which the domain was last updated.
# self.expires -- date in which the domain expires
# self.databaseupdated -- date in which the database was last
updated.
# self.servers -- list of (hostname, ip) pairs of the
# nameservers.
# self.registrant -- name of the person or organization that
# registered the domain.
# self.registrant_address -- address of the person or organization
that
# registered the domain.
# self.contacts -- dictionary of contacts###
##
#
#"""

#_version = "1.0"

import os, sys, string, time, getopt, socket, select, re

NoSuchDomain = "NoSuchDomain"

def whois(domainname, whoisserver=None, cache=0):
if whoisserver is None:
whoisserver = "whois.networksolutions.com"

if cache:
fn = "%s.dom" % domainname
if os.path.exists(fn):
return open(fn).read()

page = _whois(domainname, whoisserver)

if cache:
open(fn, "w").write(page)

return page

def _whois(domainname, whoisserver):
s = None

## try until we are connected

while s == None:
try:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.setblocking(0)
try:
s.connect(whoisserver, 43)
except socket.error, (ecode, reason):
if ecode in (115, 150):
pass
else:
raise socket.error, (ecode, reason)
ret = select.select(, , [], 30)

if len(ret[1]) == 0 and len(ret[0]) == 0:
s.close()
raise TimedOut, "on connect "
s.setblocking(1)

except socket.error, (ecode, reason):
print ecode, reason
time.sleep(10)
s = None

s.send("%s \n\n" % domainname)
page = ""
while 1:
data = s.recv()
if not data: break

page = page + data

s.close()

if string.find(page, "No match for") != -1:
raise NoSuchDomain, domainname

if string.find(page, "No entries found") != -1:
raise NoSuchDomain, domainname

if string.find(page, "no domain specified") != -1:
raise NoSuchDomain, domainname

if string.find(page, "NO MATCH") != -1:
raise NoSuchDomain, domainname
return page

##
##
----------------------------------------------------------------------
##

class DomainRecord:
def __init__(self, domain):
self.domain = domain
self.domainid = None
self.created = None
self.lastupdated = None
self.expires = None
self.databaseupdated = None
self.servers = None
self.registrant = None
self.registrant_address = None
self.contacts = {}

def __str__(self):
return "%s (%s): (created:%s) (lastupdated:%s)
(databaseupdated:%s) (servers:%s) (registrant:%s) (address:%s)
(contacts:%s)" % (self.domain, self.domainid, self.created,
self.lastupdated, self.databaseupdated, self.servers, self.registrant,
repr(self.registrant_address), self.contacts)


##
##
----------------------------------------------------------------------
##

def _ParseContacts_RegisterCOM(page):
contactDict = {}
parts = re.split("((?:(?:Administrative|Billing|Technical|Zone)
Contact,?[ ]*)+:)\n", page)

contacttypes = None
for part in parts:
if string.find(part, "Contact:") != -1:
if part[-1] == ":": part = part[:-1]
contacttypes = string.split(part, ",")
continue
part = string.strip(part)
if not part: continue

record = {}

lines = string.split(part, "\n")
m = re.search("(.+) (.+@.+)", lines[0])
if m:
record['name'] = string.strip(m.group(1))
record['handle'] = None
record['email'] = string.lower(string.strip(m.group(2)))

flag = 0
phonelines = string.strip(lines[1])
record['phone'] = phonelines
record['address'] = []

for contacttype in contacttypes:
contacttype = string.lower(string.strip(contacttype))
contacttype = string.replace(contacttype, " contact", "")
contactDict[contacttype] = record

return contactDict



def ParseWhois_RegisterCOM(page):

m = re.search("Domain Name: (.+)", page)
domain = m.group(1)
rec = DomainRecord(domain)

m = re.search("Record last updated on.*: (.+)", page)
if m: rec.lastupdated = m.group(1)

m = re.search("Created on.*: (.+)", page)
if m: rec.created = m.group(1)

m = re.search("Expires on.*: (.+)", page)
if m: rec.expires = m.group(1)


m = re.search("Registrant:", page)
if m:
i = m.end()
m = re.search("\n\n", page[i:])
j = m.start()
registrant = string.strip(page[i:i+j])
lines = string.split(registrant, "\n")
registrant = []
for line in lines:
line = string.strip(line)
if not line: continue
registrant.append(line)
rec.registrant = registrant[0]
rec.registrant_address = string.join(registrant[1:], "\n")

m = re.search("(.+) \((.+)\)$", rec.registrant)
if m:
rec.registrant = m.group(1)
rec.domainid = m.group(2)

m = re.search("Domain servers in listed order:\n\n", page)
if m:
i = m.end()
m = re.search("\n\n", page[i:])
j = m.start()
servers = string.strip(page[i:i+j])
lines = string.split(servers, "\n")
servers = []
for line in lines:
parts = string.split(string.strip(line))
if not parts: continue
servers.append(parts[0], parts[1])
rec.servers = servers

m =
re.search("((?:(?:Administrative|Billing|Technical|Zone) Contact,?[
]*)+:)\n", page)
if m:
i = m.start()
m = re.search("Domain servers in listed order", page)
j = m.start()
contacts = string.strip(page[i:j])

rec.contacts = _ParseContacts_RegisterCOM(contacts)

return rec

##
##
----------------------------------------------------------------------
##

def _ParseContacts_NetworkSolutions(page):
contactDict = {}
parts = re.split("((?:(?:Administrative|Billing|Technical|Zone)
Contact,?[ ]*)+:)\n", page)

contacttypes = None
for part in parts:
if string.find(part, "Contact:") != -1:
if part[-1] == ":": part = part[:-1]
contacttypes = string.split(part, ",")
continue
part = string.strip(part)
if not part: continue

record = {}

lines = string.split(part, "\n")
m = re.search("(.+) \((.+)\) (.+@.+)", lines[0])
if m:
record['name'] = string.strip(m.group(1))
record['handle'] = string.strip(m.group(2))
record['email'] = string.lower(string.strip(m.group(3)))

flag = 0
addresslines = []
phonelines = []
for line in lines[1:]:
line = string.strip(line)
if not line:
flag = 1
continue
if flag == 0:
addresslines.append(line)
else:
phonelines.append(line)
record['phone'] = string.join(phonelines, "\n")
record['address'] = string.join(addresslines, "\n")

for contacttype in contacttypes:
contacttype = string.lower(string.strip(contacttype))
contacttype = string.replace(contacttype, " contact", "")
contactDict[contacttype] = record

return contactDict

def ParseWhois_NetworkSolutions(page):
m = re.search("Domain Name: (.+)", page)
domain = m.group(1)
rec = DomainRecord(domain)

m = re.search("Record last updated on (.+)\.", page)
if m: rec.lastupdated = m.group(1)

m = re.search("Record created on (.+)\.", page)
if m: rec.created = m.group(1)

m = re.search("Database last updated on (.+)\.", page)
if m: rec.databaseupdated = m.group(1)

m = re.search("Registrant:", page)
if m:
i = m.end()
m = re.search("\n\n", page[i:])
j = m.start()
registrant = string.strip(page[i:i+j])
lines = string.split(registrant, "\n")
registrant = []
for line in lines:
line = string.strip(line)
if not line: continue
registrant.append(line)
rec.registrant = registrant[0]
rec.registrant_address = string.join(registrant[1:], "\n")

m = re.search("(.+) \((.+)\)$", rec.registrant)
if m:
rec.registrant = m.group(1)
rec.domainid = m.group(2)

m = re.search("Domain servers in listed order:\n\n", page)
if m:
i = m.end()
m = re.search("\n\n", page[i:])
j = m.start()
servers = string.strip(page[i:i+j])
lines = string.split(servers, "\n")
servers = []
for line in lines:
parts = string.split(string.strip(line))
if not parts: continue
servers.append(parts[0], parts[1])
rec.servers = servers

m =
re.search("((?:(?:Administrative|Billing|Technical|Zone) Contact,?[
]*)+:)\n", page)
if m:
i = m.start()
m = re.search("Record last updated on", page)
j = m.start()
contacts = string.strip(page[i:j])

rec.contacts = _ParseContacts_NetworkSolutions(contacts)

return rec


##
##
----------------------------------------------------------------------
##

def ParseWhois(page):
if string.find(page, "Registrar..: Register.com
(http://www.register.com)") != -1:
return ParseWhois_RegisterCOM(page)
else:
return ParseWhois_NetworkSolutions(page)


##
##
----------------------------------------------------------------------
##

def usage(progname):
version = _version
print __doc__ % vars()

def main(argv, stdout, environ):
progname = argv[0]
list, args = getopt.getopt(argv[1:], "", ["help", "version",
"test"])

for (field, val) in list:
if field == "--help":
usage(progname)
return
elif field == "--version":
print progname, _version
return
elif field == "--test":
test()
return


for domain in args:
try:
page = whois(domain)
print page
except NoSuchDomain, reason:
print "ERROR: no such domain %s" % domain

if __name__ == "__main__":
main(sys.argv, sys.stdout, os.environ)
 
D

Dmitry A.Lyakhovets

Hello!

You should at least close the 'try' block, which you started
at line 68 (if i'm not mistaken):


def _whois(domainname, whoisserver):
s = None

## try until we are connected

while s == None:
try:
^^^^^^^^

There is no corresponding 'except' till DomainRecord class
definition.




On 13 Mar 2005 11:22:54 -0800
I am sure this is old news, the syntax of python is crazy
to me. There I said it, I'm sure I'll get over it or
around it.

I was trying to make a whois script work and was unable.

May be someone with lint-like eyes can tell what's wrong.

Using xemacs I had hoped that python mode would do more
for syntax problems, maybe I'm just not using python mode
correctly in xemacs??

../whois.py yahoo.com
File "./whois.py", line 117
class DomainRecord:
^
SyntaxError: invalid syntax


#!/usr/bin/env python


#usage: %(progname)s [--test] [domain...]

#Version: %(version)s

#Contacts the NetworkSolutions whois database for each
#domain and
displays
#the result.

#public methods:

# def whois(domainname, whoisserver=None, cache=0)
# raises NoSuchDomain if the domain doesn't exist.

# return the result of contacting NetworkSolutions

#def ParseWhois(page)
# returns a DomainRecord object that contains a parsed
#version of the information contained in 'page'.

#class DomainRecord:
# self.domain -- name of the domain
#self.domainid -- domainid for this domain
# self.created -- date in which the domain was
# created
# self.lastupdated -- date in which the domain was
# last updated.
# self.expires -- date in which the domain
# expires self.databaseupdated -- date in which the
# database was last
updated.
# self.servers -- list of (hostname, ip) pairs
# of the
# nameservers.
# self.registrant -- name of the person or
# organization that
# registered the domain.
# self.registrant_address -- address of the person or
# organization
that
# registered the domain.
# self.contacts -- dictionary of contacts###
##
#
#"""

#_version = "1.0"

import os, sys, string, time, getopt, socket, select, re

NoSuchDomain = "NoSuchDomain"

def whois(domainname, whoisserver=None, cache=0):
if whoisserver is None:
whoisserver = "whois.networksolutions.com"

if cache:
fn = "%s.dom" % domainname
if os.path.exists(fn):
return open(fn).read()

page = _whois(domainname, whoisserver)

if cache:
open(fn, "w").write(page)

return page

def _whois(domainname, whoisserver):
s = None

## try until we are connected

while s == None:
try:
s = socket.socket(socket.AF_INET,
socket.SOCK_STREAM) s.setblocking(0)
try:
s.connect(whoisserver, 43)
except socket.error, (ecode, reason):
if ecode in (115, 150):
pass
else:
raise socket.error, (ecode, reason)
ret = select.select(, , [], 30)

if len(ret[1]) == 0 and len(ret[0]) == 0:
s.close()
raise TimedOut, "on connect "
s.setblocking(1)

except socket.error, (ecode, reason):
print ecode, reason
time.sleep(10)
s = None

s.send("%s \n\n" % domainname)
page = ""
while 1:
data = s.recv()
if not data: break

page = page + data

s.close()

if string.find(page, "No match for") != -1:
raise NoSuchDomain, domainname

if string.find(page, "No entries found") != -1:
raise NoSuchDomain, domainname

if string.find(page, "no domain specified") !=
-1:
raise NoSuchDomain, domainname

if string.find(page, "NO MATCH") != -1:
raise NoSuchDomain, domainname
return page

##
##
---------------------------------------------------------
-------------
##

class DomainRecord:
def __init__(self, domain):
self.domain = domain
self.domainid = None
self.created = None
self.lastupdated = None
self.expires = None
self.databaseupdated = None
self.servers = None
self.registrant = None
self.registrant_address = None
self.contacts = {}

def __str__(self):
return "%s (%s): (created:%s) (lastupdated:%s)
(databaseupdated:%s) (servers:%s) (registrant:%s)
(address:%s)(contacts:%s)" % (self.domain, self.domainid,
self.created, self.lastupdated, self.databaseupdated,
self.servers, self.registrant,
repr(self.registrant_address), self.contacts)


##
##
---------------------------------------------------------
-------------
##

def _ParseContacts_RegisterCOM(page):
contactDict = {}
parts =
re.split("((?:(?:Administrative|Billing|Technical|Zone)
Contact,?[ ]*)+:)\n", page)

contacttypes = None
for part in parts:
if string.find(part, "Contact:") != -1:
if part[-1] == ":": part = part[:-1]
contacttypes = string.split(part, ",")
continue
part = string.strip(part)
if not part: continue

record = {}

lines = string.split(part, "\n")
m = re.search("(.+) (.+@.+)", lines[0])
if m:
record['name'] = string.strip(m.group(1))
record['handle'] = None
record['email'] =
string.lower(string.strip(m.group(2)))

flag = 0
phonelines = string.strip(lines[1])
record['phone'] = phonelines
record['address'] = []

for contacttype in contacttypes:
contacttype =
string.lower(string.strip(contacttype))
contacttype = string.replace(contacttype, "
contact", "") contactDict[contacttype] = record

return contactDict



def ParseWhois_RegisterCOM(page):

m = re.search("Domain Name: (.+)", page)
domain = m.group(1)
rec = DomainRecord(domain)

m = re.search("Record last updated on.*: (.+)", page)
if m: rec.lastupdated = m.group(1)

m = re.search("Created on.*: (.+)", page)
if m: rec.created = m.group(1)

m = re.search("Expires on.*: (.+)", page)
if m: rec.expires = m.group(1)


m = re.search("Registrant:", page)
if m:
i = m.end()
m = re.search("\n\n", page[i:])
j = m.start()
registrant = string.strip(page[i:i+j])
lines = string.split(registrant, "\n")
registrant = []
for line in lines:
line = string.strip(line)
if not line: continue
registrant.append(line)
rec.registrant = registrant[0]
rec.registrant_address = string.join(registrant[1:],
"\n")

m = re.search("(.+) \((.+)\)$", rec.registrant)
if m:
rec.registrant = m.group(1)
rec.domainid = m.group(2)

m = re.search("Domain servers in listed
order:\n\n", page) if m:
i = m.end()
m = re.search("\n\n", page[i:])
j = m.start()
servers = string.strip(page[i:i+j])
lines = string.split(servers, "\n")
servers = []
for line in lines:
parts = string.split(string.strip(line))
if not parts: continue
servers.append(parts[0], parts[1])
rec.servers = servers

m =
re.search("((?:(?:Administrative|Billing|Technical|Zone)
Contact,?[]*)+:)\n", page)
if m:
i = m.start()
m = re.search("Domain servers in listed
order", page) j = m.start()
contacts = string.strip(page[i:j])

rec.contacts =
_ParseContacts_RegisterCOM(contacts)

return rec

##
##
---------------------------------------------------------
-------------
##

def _ParseContacts_NetworkSolutions(page):
contactDict = {}
parts =
re.split("((?:(?:Administrative|Billing|Technical|Zone)
Contact,?[ ]*)+:)\n", page)

contacttypes = None
for part in parts:
if string.find(part, "Contact:") != -1:
if part[-1] == ":": part = part[:-1]
contacttypes = string.split(part, ",")
continue
part = string.strip(part)
if not part: continue

record = {}

lines = string.split(part, "\n")
m = re.search("(.+) \((.+)\) (.+@.+)", lines[0])
if m:
record['name'] = string.strip(m.group(1))
record['handle'] = string.strip(m.group(2))
record['email'] =
string.lower(string.strip(m.group(3)))

flag = 0
addresslines = []
phonelines = []
for line in lines[1:]:
line = string.strip(line)
if not line:
flag = 1
continue
if flag == 0:
addresslines.append(line)
else:
phonelines.append(line)
record['phone'] = string.join(phonelines, "\n")
record['address'] = string.join(addresslines,
"\n")

for contacttype in contacttypes:
contacttype =
string.lower(string.strip(contacttype))
contacttype = string.replace(contacttype, "
contact", "") contactDict[contacttype] =
record

return contactDict

def ParseWhois_NetworkSolutions(page):
m = re.search("Domain Name: (.+)", page)
domain = m.group(1)
rec = DomainRecord(domain)

m = re.search("Record last updated on (.+)\.", page)
if m: rec.lastupdated = m.group(1)

m = re.search("Record created on (.+)\.", page)
if m: rec.created = m.group(1)

m = re.search("Database last updated on (.+)\.", page)
if m: rec.databaseupdated = m.group(1)

m = re.search("Registrant:", page)
if m:
i = m.end()
m = re.search("\n\n", page[i:])
j = m.start()
registrant = string.strip(page[i:i+j])
lines = string.split(registrant, "\n")
registrant = []
for line in lines:
line = string.strip(line)
if not line: continue
registrant.append(line)
rec.registrant = registrant[0]
rec.registrant_address = string.join(registrant[1:],
"\n")

m = re.search("(.+) \((.+)\)$", rec.registrant)
if m:
rec.registrant = m.group(1)
rec.domainid = m.group(2)

m = re.search("Domain servers in listed
order:\n\n", page) if m:
i = m.end()
m = re.search("\n\n", page[i:])
j = m.start()
servers = string.strip(page[i:i+j])
lines = string.split(servers, "\n")
servers = []
for line in lines:
parts = string.split(string.strip(line))
if not parts: continue
servers.append(parts[0], parts[1])
rec.servers = servers

m =
re.search("((?:(?:Administrative|Billing|Technical|Zone)
Contact,?[]*)+:)\n", page)
if m:
i = m.start()
m = re.search("Record last updated on",
page) j = m.start()
contacts = string.strip(page[i:j])

rec.contacts =
_ParseContacts_NetworkSolutions(contacts)

return rec


##
##
---------------------------------------------------------
-------------
##

def ParseWhois(page):
if string.find(page, "Registrar..: Register.com
(http://www.register.com)") != -1:
return ParseWhois_RegisterCOM(page)
else:
return ParseWhois_NetworkSolutions(page)


##
##
---------------------------------------------------------
-------------
##

def usage(progname):
version = _version
print __doc__ % vars()

def main(argv, stdout, environ):
progname = argv[0]
list, args = getopt.getopt(argv[1:], "", ["help",
"version",
"test"])

for (field, val) in list:
if field == "--help":
usage(progname)
return
elif field == "--version":
print progname, _version
return
elif field == "--test":
test()
return


for domain in args:
try:
page = whois(domain)
print page
except NoSuchDomain, reason:
print "ERROR: no such domain %s" % domain

if __name__ == "__main__":
main(sys.argv, sys.stdout, os.environ)
Click to expand...
 
B

Bengt Richter

I am sure this is old news, the syntax of python is crazy to me.
There I said it, I'm sure I'll get over it or around it.

I was trying to make a whois script work and was unable.

May be someone with lint-like eyes can tell what's wrong. I haven't tried

Using xemacs I had hoped that python mode would do more
for syntax problems, maybe I'm just not using python mode
correctly in xemacs??

./whois.py yahoo.com
File "./whois.py", line 117
class DomainRecord:
^
SyntaxError: invalid syntax
Click to expand...

Yeah, that's not terribly informative. But notice that all your try/except pairs aren't lined up.
The second except is at the same indentation as the first below the second try. Multiple excepts
are legal under a try, but in your case it leaves the outer (first) try without any matching-indent except.

After fixing that, you may have to join some broken lines, if your post is accurately reflecting your source.

[...]
## try until we are connected

while s == None:
try:
Click to expand...
The above try has no matching except
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.setblocking(0)
try:
s.connect(whoisserver, 43)
except socket.error, (ecode, reason):
if ecode in (115, 150):
pass
else:
raise socket.error, (ecode, reason)
ret = select.select(, , [], 30)

if len(ret[1]) == 0 and len(ret[0]) == 0:
s.close()
raise TimedOut, "on connect "
s.setblocking(1)

except socket.error, (ecode, reason):
Click to expand...

The above except is at the same indentation as the previous one,
which is legal syntax, but you probably meant it to match the first try?
print ecode, reason
time.sleep(10)
s = None

s.send("%s \n\n" % domainname)
page = ""
while 1:
data = s.recv()
if not data: break

page = page + data

s.close()

if string.find(page, "No match for") != -1:
raise NoSuchDomain, domainname

if string.find(page, "No entries found") != -1:
raise NoSuchDomain, domainname

if string.find(page, "no domain specified") != -1:
raise NoSuchDomain, domainname

if string.find(page, "NO MATCH") != -1:
raise NoSuchDomain, domainname
return page
Click to expand...
Careful with the above return's indentation after you fix the try/excepts.
##
##
----------------------------------------------------------------------
Click to expand...
I've heard pychecker (http://pychecker.sourceforge.net/) catches a lot of stuff.
Maybe it would help you. Having lint-eyes, I haven't yet tried it, though it
would probably save me some time ;-)

Regards,
Bengt Richter
 

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