Mailman 3 September 2005 - Python-Dev

os.path.diff(path1, path2)
by Nathan Bullock Sept. 22, 2005

Sept. 22, 2005

Just wondering if a function such as this has ever been considered? I find that I quite often want a function that will give me a relative path from path A to path B. I have created such a function, but it would be nice if it was in the standard library. This function would take two paths: A and B and give the relation between them. Here are a few of examples. os.path.diff("/A/C/D/", "/A/D/F/") ==> "../../D/F" os.path.diff("/A/", "/A/B/C/") ==> "B/C" os.path.diff("/A/B/C/", "/A/") =… [View More]

8 14

bool(iter([])) changed between 2.3 and 2.4
by Raymond Hettinger Sept. 22, 2005

Sept. 22, 2005

[Guido] > I strongly feel that this needs to be corrected in 2.5. Iterators > should have neither __len__ nor __nonzero__. Right. I'll get it fixed-up. [Terry Reedy] > I presume there were two reasons: internal efficiency of > preallocations > (list(some_it) for example) [Guido] > This could have been implemented without making the > implementation details public. I see a way to do that by renaming the __len__ method to some private name for internal use. This … [View More]

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Proof of the pudding: str.partition()
by Raymond Hettinger Sept. 21, 2005

Sept. 21, 2005

As promised, here is a full set of real-world comparative code transformations using str.partition(). The patch isn't intended to be applied; rather, it is here to test/demonstrate whether the new construct offers benefits under a variety of use cases. Overall, I found that partition() usefully encapsulated commonly occurring low-level programming patterns. In most cases, it completely eliminated the need for slicing and indices. In several cases, code was simplified dramatically; in some, … [View More]the simplification was minor; and in a few cases, the complexity was about the same. No cases were made worse. Most patterns using str.find() directly translated into an equivalent using partition. The only awkwardness that arose was in cases where the original code had a test like, "if s.find(pat) > 0". That case translated to a double-term test, "if found and head". Also, some pieces of code needed a tail that included the separator. That need was met by inserting a line like "tail = sep + tail". And that solution led to a minor naming discomfort for the middle term of the result tuple, it was being used as both a Boolean found flag and as a string containing the separator (hence conflicting the choice of names between "found" and "sep"). In most cases, there was some increase in efficiency resulting fewer total steps and tests, and from eliminating double searches. However, in a few cases, the new code was less efficient because the fragment only needed either the head or tail but not both as provided by partition(). In every case, the code was clearer after the transformation. Also, none of the transformations required str.partition() to be used in a tricky way. In contrast, I found many contortions using str.find() where I had to diagram every possible path to understand what the code was trying to do or to assure myself that it worked. The new methods excelled at reducing cyclomatic complexity by eliminating conditional paths. The methods were especially helpful in the context of multiple finds (i.e. split at the leftmost colon if present within a group following the rightmost forward slash if present). In several cases, the replaced code exactly matched the pure python version of str.partition() -- this confirms that people are routinely writing multi-step low-level in-line code that duplicates was str.partition() does in a single step. The more complex transformations were handled by first figuring out exactly was the original code did under all possible cases and then writing the partition() version to match that spec. The lesson was that it is much easier to program from scratch using partition() than it is to code using find(). The new method more naturally expresses a series of parsing steps interleaved with other code. With further ado, here are the comparative code fragments: Index: CGIHTTPServer.py =================================================================== *** 106,121 **** def run_cgi(self): """Execute a CGI script.""" dir, rest = self.cgi_info ! i = rest.rfind('?') ! if i >= 0: ! rest, query = rest[:i], rest[i+1:] ! else: ! query = '' ! i = rest.find('/') ! if i >= 0: ! script, rest = rest[:i], rest[i:] ! else: ! script, rest = rest, '' scriptname = dir + '/' + script scriptfile = self.translate_path(scriptname) if not os.path.exists(scriptfile): --- 106,113 ---- def run_cgi(self): """Execute a CGI script.""" dir, rest = self.cgi_info ! rest, _, query = rest.rpartition('?') ! script, _, rest = rest.partition('/') scriptname = dir + '/' + script scriptfile = self.translate_path(scriptname) if not os.path.exists(scriptfile): Index: ConfigParser.py =================================================================== *** 599,612 **** if depth > MAX_INTERPOLATION_DEPTH: raise InterpolationDepthError(option, section, rest) while rest: ! p = rest.find("%") ! if p < 0: ! accum.append(rest) return ! if p > 0: ! accum.append(rest[:p]) ! rest = rest[p:] ! # p is no longer used c = rest[1:2] if c == "%": accum.append("%") --- 599,611 ---- if depth > MAX_INTERPOLATION_DEPTH: raise InterpolationDepthError(option, section, rest) while rest: ! head, sep, rest = rest.partition("%") ! if not sep: ! accum.append(head) return ! rest = sep + rest ! if found and head: ! accum.append(head) c = rest[1:2] if c == "%": accum.append("%") Index: cgi.py =================================================================== *** 337,346 **** key = plist.pop(0).lower() pdict = {} for p in plist: ! i = p.find('=') ! if i >= 0: ! name = p[:i].strip().lower() ! value = p[i+1:].strip() if len(value) >= 2 and value[0] == value[-1] == '"': value = value[1:-1] value = value.replace('\\\\', '\\').replace('\\"', '"') --- 337,346 ---- key = plist.pop(0).lower() pdict = {} for p in plist: ! name, found, value = p.partition('=') ! if found: ! name = name.strip().lower() ! value = value.strip() if len(value) >= 2 and value[0] == value[-1] == '"': value = value[1:-1] value = value.replace('\\\\', '\\').replace('\\"', '"') Index: cookielib.py =================================================================== *** 610,618 **** def request_port(request): host = request.get_host() ! i = host.find(':') ! if i >= 0: ! port = host[i+1:] try: int(port) except ValueError: --- 610,617 ---- def request_port(request): host = request.get_host() ! _, sep, port = host.partition(':') ! if sep: try: int(port) except ValueError: *************** *** 670,681 **** '.local' """ ! i = h.find(".") ! if i >= 0: ! #a = h[:i] # this line is only here to show what a is ! b = h[i+1:] ! i = b.find(".") ! if is_HDN(h) and (i >= 0 or b == "local"): return "."+b return h --- 669,677 ---- '.local' """ ! a, found, b = h.partition('.') ! if found: ! if is_HDN(h) and ('.' in b or b == "local"): return "."+b return h *************** *** 1451,1463 **** else: path_specified = False path = request_path(request) ! i = path.rfind("/") ! if i != -1: if version == 0: # Netscape spec parts company from reality here ! path = path[:i] else: ! path = path[:i+1] if len(path) == 0: path = "/" # set default domain --- 1447,1459 ---- else: path_specified = False path = request_path(request) ! head, sep, _ = path.rpartition('/') ! if sep: if version == 0: # Netscape spec parts company from reality here ! path = head else: ! path = head + sep if len(path) == 0: path = "/" # set default domain Index: gopherlib.py =================================================================== *** 57,65 **** """Send a selector to a given host and port, return a file with the reply.""" import socket if not port: ! i = host.find(':') ! if i >= 0: ! host, port = host[:i], int(host[i+1:]) if not port: port = DEF_PORT elif type(port) == type(''): --- 57,65 ---- """Send a selector to a given host and port, return a file with the reply.""" import socket if not port: ! head, found, tail = host.partition(':') ! if found: ! host, port = head, int(tail) if not port: port = DEF_PORT elif type(port) == type(''): Index: httplib.py =================================================================== *** 490,498 **** while True: if chunk_left is None: line = self.fp.readline() ! i = line.find(';') ! if i >= 0: ! line = line[:i] # strip chunk-extensions chunk_left = int(line, 16) if chunk_left == 0: break --- 490,496 ---- while True: if chunk_left is None: line = self.fp.readline() ! line, _, _ = line.partition(';') # strip chunk-extensions chunk_left = int(line, 16) if chunk_left == 0: break *************** *** 586,599 **** def _set_hostport(self, host, port): if port is None: ! i = host.rfind(':') ! j = host.rfind(']') # ipv6 addresses have [...] ! if i > j: try: ! port = int(host[i+1:]) except ValueError: ! raise InvalidURL("nonnumeric port: '%s'" % host[i+1:]) ! host = host[:i] else: port = self.default_port if host and host[0] == '[' and host[-1] == ']': --- 584,595 ---- def _set_hostport(self, host, port): if port is None: ! host, _, port = host.rpartition(':') ! if ']' not in port: # ipv6 addresses have [...] try: ! port = int(port) except ValueError: ! raise InvalidURL("nonnumeric port: '%s'" % port) else: port = self.default_port if host and host[0] == '[' and host[-1] == ']': *************** *** 976,998 **** L = [self._buf] self._buf = '' while 1: ! i = L[-1].find("\n") ! if i >= 0: break s = self._read() if s == '': break L.append(s) ! if i == -1: # loop exited because there is no more data return "".join(L) else: ! all = "".join(L) ! # XXX could do enough bookkeeping not to do a 2nd search ! i = all.find("\n") + 1 ! line = all[:i] ! self._buf = all[i:] ! return line def readlines(self, sizehint=0): total = 0 --- 972,990 ---- L = [self._buf] self._buf = '' while 1: ! head, found, tail = L[-1].partition('\n') ! if found: break s = self._read() if s == '': break L.append(s) ! if not found: # loop exited because there is no more data return "".join(L) else: ! self._buf = found + tail ! return "".join(L) + head def readlines(self, sizehint=0): total = 0 Index: ihooks.py =================================================================== *** 426,438 **** return None def find_head_package(self, parent, name): ! if '.' in name: ! i = name.find('.') ! head = name[:i] ! tail = name[i+1:] ! else: ! head = name ! tail = "" if parent: qname = "%s.%s" % (parent.__name__, head) else: --- 426,432 ---- return None def find_head_package(self, parent, name): ! head, _, tail = name.partition('.') if parent: qname = "%s.%s" % (parent.__name__, head) else: *************** *** 449,457 **** def load_tail(self, q, tail): m = q while tail: ! i = tail.find('.') ! if i < 0: i = len(tail) ! head, tail = tail[:i], tail[i+1:] mname = "%s.%s" % (m.__name__, head) m = self.import_it(head, mname, m) if not m: --- 443,449 ---- def load_tail(self, q, tail): m = q while tail: ! head, _, tail = tail.partition('.') mname = "%s.%s" % (m.__name__, head) m = self.import_it(head, mname, m) if not m: Index: locale.py =================================================================== *** 98,106 **** seps = 0 spaces = "" if s[-1] == ' ': ! sp = s.find(' ') ! spaces = s[sp:] ! s = s[:sp] while s and grouping: # if grouping is -1, we are done if grouping[0]==CHAR_MAX: --- 98,105 ---- seps = 0 spaces = "" if s[-1] == ' ': ! spaces, sep, tail = s.partition(' ') ! s = sep + tail while s and grouping: # if grouping is -1, we are done if grouping[0]==CHAR_MAX: *************** *** 148,156 **** # so, kill as much spaces as there where separators. # Leading zeroes as fillers are not yet dealt with, as it is # not clear how they should interact with grouping. ! sp = result.find(" ") ! if sp==-1:break ! result = result[:sp]+result[sp+1:] seps -= 1 return result --- 147,156 ---- # so, kill as much spaces as there where separators. # Leading zeroes as fillers are not yet dealt with, as it is # not clear how they should interact with grouping. ! head, found, tail = result.partition(' ') ! if not found: ! break ! result = head + tail seps -= 1 return result Index: mailcap.py =================================================================== *** 105,117 **** key, view, rest = fields[0], fields[1], fields[2:] fields = {'view': view} for field in rest: ! i = field.find('=') ! if i < 0: ! fkey = field ! fvalue = "" ! else: ! fkey = field[:i].strip() ! fvalue = field[i+1:].strip() if fkey in fields: # Ignore it pass --- 105,113 ---- key, view, rest = fields[0], fields[1], fields[2:] fields = {'view': view} for field in rest: ! fkey, found, fvalue = field.partition('=') ! fkey = fkey.strip() ! fvalue = fvalue.strip() if fkey in fields: # Ignore it pass Index: mhlib.py =================================================================== *** 356,364 **** if seq == 'all': return all # Test for X:Y before X-Y because 'seq:-n' matches both ! i = seq.find(':') ! if i >= 0: ! head, dir, tail = seq[:i], '', seq[i+1:] if tail[:1] in '-+': dir, tail = tail[:1], tail[1:] if not isnumeric(tail): --- 356,364 ---- if seq == 'all': return all # Test for X:Y before X-Y because 'seq:-n' matches both ! head, found, tail = seq.partition(':') ! if found: ! dir = '' if tail[:1] in '-+': dir, tail = tail[:1], tail[1:] if not isnumeric(tail): *************** *** 394,403 **** i = bisect(all, anchor-1) return all[i:i+count] # Test for X-Y next ! i = seq.find('-') ! if i >= 0: ! begin = self._parseindex(seq[:i], all) ! end = self._parseindex(seq[i+1:], all) i = bisect(all, begin-1) j = bisect(all, end) r = all[i:j] --- 394,403 ---- i = bisect(all, anchor-1) return all[i:i+count] # Test for X-Y next ! head, found, tail = seq.find('-') ! if found: ! begin = self._parseindex(head, all) ! end = self._parseindex(tail, all) i = bisect(all, begin-1) j = bisect(all, end) r = all[i:j] Index: modulefinder.py =================================================================== *** 140,148 **** assert caller is parent self.msgout(4, "determine_parent ->", parent) return parent ! if '.' in pname: ! i = pname.rfind('.') ! pname = pname[:i] parent = self.modules[pname] assert parent.__name__ == pname self.msgout(4, "determine_parent ->", parent) --- 140,147 ---- assert caller is parent self.msgout(4, "determine_parent ->", parent) return parent ! pname, found, _ = pname.rpartition('.') ! if found: parent = self.modules[pname] assert parent.__name__ == pname self.msgout(4, "determine_parent ->", parent) *************** *** 152,164 **** def find_head_package(self, parent, name): self.msgin(4, "find_head_package", parent, name) ! if '.' in name: ! i = name.find('.') ! head = name[:i] ! tail = name[i+1:] ! else: ! head = name ! tail = "" if parent: qname = "%s.%s" % (parent.__name__, head) else: --- 151,157 ---- def find_head_package(self, parent, name): self.msgin(4, "find_head_package", parent, name) ! head, _, tail = name.partition('.') if parent: qname = "%s.%s" % (parent.__name__, head) else: Index: pdb.py =================================================================== *** 189,200 **** # split into ';;' separated commands # unless it's an alias command if args[0] != 'alias': ! marker = line.find(';;') ! if marker >= 0: ! # queue up everything after marker ! next = line[marker+2:].lstrip() self.cmdqueue.append(next) ! line = line[:marker].rstrip() return line # Command definitions, called by cmdloop() --- 189,200 ---- # split into ';;' separated commands # unless it's an alias command if args[0] != 'alias': ! line, found, next = line.partition(';;') ! if found: ! # queue up everything after command separator ! next = next.lstrip() self.cmdqueue.append(next) ! line = line.rstrip() return line # Command definitions, called by cmdloop() *************** *** 217,232 **** filename = None lineno = None cond = None ! comma = arg.find(',') ! if comma > 0: # parse stuff after comma: "condition" ! cond = arg[comma+1:].lstrip() ! arg = arg[:comma].rstrip() # parse stuff before comma: [filename:]lineno | function - colon = arg.rfind(':') funcname = None ! if colon >= 0: ! filename = arg[:colon].rstrip() f = self.lookupmodule(filename) if not f: print '*** ', repr(filename), --- 217,232 ---- filename = None lineno = None cond = None ! arg, found, cond = arg.partition(',') ! if found and arg: # parse stuff after comma: "condition" ! arg = arg.rstrip() ! cond = cond.lstrip() # parse stuff before comma: [filename:]lineno | function funcname = None ! filename, found, arg = arg.rpartition(':') ! if found: ! filename = filename.rstrip() f = self.lookupmodule(filename) if not f: print '*** ', repr(filename), *************** *** 234,240 **** return else: filename = f ! arg = arg[colon+1:].lstrip() try: lineno = int(arg) except ValueError, msg: --- 234,240 ---- return else: filename = f ! arg = arg.lstrip() try: lineno = int(arg) except ValueError, msg: *************** *** 437,445 **** return if ':' in arg: # Make sure it works for "clear C:\foo\bar.py:12" ! i = arg.rfind(':') ! filename = arg[:i] ! arg = arg[i+1:] try: lineno = int(arg) except: --- 437,443 ---- return if ':' in arg: # Make sure it works for "clear C:\foo\bar.py:12" ! filename, _, arg = arg.rpartition(':') try: lineno = int(arg) except: Index: rfc822.py =================================================================== *** 197,205 **** You may override this method in order to use Message parsing on tagged data in RFC 2822-like formats with special header formats. """ ! i = line.find(':') ! if i > 0: ! return line[:i].lower() return None def islast(self, line): --- 197,205 ---- You may override this method in order to use Message parsing on tagged data in RFC 2822-like formats with special header formats. """ ! head, found, tail = line.partition(':') ! if found and head: ! return head.lower() return None def islast(self, line): *************** *** 340,348 **** else: if raw: raw.append(', ') ! i = h.find(':') ! if i > 0: ! addr = h[i+1:] raw.append(addr) alladdrs = ''.join(raw) a = AddressList(alladdrs) --- 340,348 ---- else: if raw: raw.append(', ') ! head, found, tail = h.partition(':') ! if found and head: ! addr = tail raw.append(addr) alladdrs = ''.join(raw) a = AddressList(alladdrs) *************** *** 859,867 **** data = stuff + data[1:] if len(data) == 4: s = data[3] ! i = s.find('+') ! if i > 0: ! data[3:] = [s[:i], s[i+1:]] else: data.append('') # Dummy tz if len(data) < 5: --- 859,867 ---- data = stuff + data[1:] if len(data) == 4: s = data[3] ! head, found, tail = s.partition('+') ! if found and head: ! data[3:] = [head, tail] else: data.append('') # Dummy tz if len(data) < 5: Index: robotparser.py =================================================================== *** 104,112 **** entry = Entry() state = 0 # remove optional comment and strip line ! i = line.find('#') ! if i>=0: ! line = line[:i] line = line.strip() if not line: continue --- 104,110 ---- entry = Entry() state = 0 # remove optional comment and strip line ! line, _, _ = line.partition('#') line = line.strip() if not line: continue Index: smtpd.py =================================================================== *** 144,156 **** self.push('500 Error: bad syntax') return method = None ! i = line.find(' ') ! if i < 0: ! command = line.upper() arg = None else: ! command = line[:i].upper() ! arg = line[i+1:].strip() method = getattr(self, 'smtp_' + command, None) if not method: self.push('502 Error: command "%s" not implemented' % command) --- 144,155 ---- self.push('500 Error: bad syntax') return method = None ! command, found, arg = line.partition(' ') ! command = command.upper() ! if not found: arg = None else: ! arg = tail.strip() method = getattr(self, 'smtp_' + command, None) if not method: self.push('502 Error: command "%s" not implemented' % command) *************** *** 495,514 **** usage(1, 'Invalid arguments: %s' % COMMASPACE.join(args)) # split into host/port pairs ! i = localspec.find(':') ! if i < 0: usage(1, 'Bad local spec: %s' % localspec) ! options.localhost = localspec[:i] try: ! options.localport = int(localspec[i+1:]) except ValueError: usage(1, 'Bad local port: %s' % localspec) ! i = remotespec.find(':') ! if i < 0: usage(1, 'Bad remote spec: %s' % remotespec) ! options.remotehost = remotespec[:i] try: ! options.remoteport = int(remotespec[i+1:]) except ValueError: usage(1, 'Bad remote port: %s' % remotespec) return options --- 494,513 ---- usage(1, 'Invalid arguments: %s' % COMMASPACE.join(args)) # split into host/port pairs ! head, found, tail = localspec.partition(':') ! if not found: usage(1, 'Bad local spec: %s' % localspec) ! options.localhost = head try: ! options.localport = int(tail) except ValueError: usage(1, 'Bad local port: %s' % localspec) ! head, found, tail = remotespec.partition(':') ! if not found: usage(1, 'Bad remote spec: %s' % remotespec) ! options.remotehost = head try: ! options.remoteport = int(tail) except ValueError: usage(1, 'Bad remote port: %s' % remotespec) return options Index: smtplib.py =================================================================== *** 276,284 **** """ if not port and (host.find(':') == host.rfind(':')): ! i = host.rfind(':') ! if i >= 0: ! host, port = host[:i], host[i+1:] try: port = int(port) except ValueError: raise socket.error, "nonnumeric port" --- 276,283 ---- """ if not port and (host.find(':') == host.rfind(':')): ! host, found, port = host.rpartition(':') ! if found: try: port = int(port) except ValueError: raise socket.error, "nonnumeric port" Index: urllib2.py =================================================================== *** 289,301 **** def add_handler(self, handler): added = False for meth in dir(handler): ! i = meth.find("_") ! protocol = meth[:i] ! condition = meth[i+1:] ! if condition.startswith("error"): ! j = condition.find("_") + i + 1 ! kind = meth[j+1:] try: kind = int(kind) except ValueError: --- 289,297 ---- def add_handler(self, handler): added = False for meth in dir(handler): ! protocol, _, condition = meth.partition('_') if condition.startswith("error"): ! _, _, kind = condition.partition('_') try: kind = int(kind) except ValueError: Index: zipfile.py =================================================================== *** 117,125 **** self.orig_filename = filename # Original file name in archive # Terminate the file name at the first null byte. Null bytes in file # names are used as tricks by viruses in archives. ! null_byte = filename.find(chr(0)) ! if null_byte >= 0: ! filename = filename[0:null_byte] # This is used to ensure paths in generated ZIP files always use # forward slashes as the directory separator, as required by the # ZIP format specification. --- 117,123 ---- self.orig_filename = filename # Original file name in archive # Terminate the file name at the first null byte. Null bytes in file # names are used as tricks by viruses in archives. ! filename, _, _ = filename.partition(chr(0)) # This is used to ensure paths in generated ZIP files always use # forward slashes as the directory separator, as required by the # ZIP format specification. [View Less]

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Re: [Python-Dev] For/while/if statements/comprehension/generator expressions unification
by Alexander Myodov Sept. 20, 2005

Sept. 20, 2005

Hello Josiah, JC> Alexander, JC> The essence of what you have proposed has been proposed (multiple times) before, JC> and I seem to remember it was shot down. To increase my understanding of Python-way, can you (or someone else) explain the reasons why such proposals were rejected? JC> The below functions offer the equivalent of list comprehensions with a JC> final post-processing step. Well, what I was suggesting is not just a cross of two lists but the syntax sugar which … [View More]

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Re: [Python-Dev] bool(iter([])) changed between 2.3 and 2.4
by Delaney, Timothy (Tim) Sept. 20, 2005

Sept. 20, 2005

Fred L. Drake, Jr. wrote: > On Tuesday 20 September 2005 17:49, Guido van Rossum wrote: > > I realize that this was a deliberate feature, and that it exists in > > 2.4 as well as in 2.4.1 and will in 2.4.2; yet, I'm not sure I > *like* > > I wasn't paying any attention at the time, so I don't know what was > discussed. Some discussion here just now leads me to believe that at > least two of us here (including myself) think iterators shouldn't > have length … [View More]

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Adding a conditional expression in Py3.0
by Jim Jewett Sept. 20, 2005

Sept. 20, 2005

Guido van Rossum: > I think I'd prefer (if <expr> then <expr> else <expre>) In isolation, (if .. then ... else) is an improvement, but I'm not sure it should be viewed in isolation. At one point, you wanted to strengthen the distinction between statements and expressions. Is that still true? x = (if y then y.val else default) x = (if y: y.val else: default) If any statement can become an expression, that could be very useful.… [View More]

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test_ossaudiodev hangs
by Guido van Rossum Sept. 20, 2005

Sept. 20, 2005

On my Linux box (Red Hat Enterprise 3), test_ossaudiodev hangs forever when I enable it: ./python -E -tt ../Lib/test/regrtest.py -u all test_ossaudiodev test_ossaudiodev Traceback (most recent call last): File "../Lib/test/regrtest.py", line 1178, in ? main() File "../Lib/test/regrtest.py", line 333, in main ok = runtest(test, generate, verbose, quiet, testdir, huntrleaks) File "../Lib/test/regrtest.py", line 473, in runtest the_package = __import__(abstest, globals(), locals(… [View More]

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2.4.2c1: test_macfs failing on Tiger (Mac OS X 10.4.2)
by Guido van Rossum Sept. 20, 2005

Sept. 20, 2005

test test_macfs failed -- Traceback (most recent call last): File "/Users/gvr/p4/Lib/test/test_macfs.py", line 53, in test_dates self.assertEqual(dates, (now, now-1, now-2)) AssertionError: (1127241062, 1127241062, 1127241061) != (1127241063, 1127241062, 1127241061) Any takers? What does this mean? (It looks like an off-by-one-error in the first timestamp, but I don't know what the code is trying to do). Is the filesystem perhaps truncating times? -- --Guido van Rossum (home page: http://www.python.org/~guido/)

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2.4.2c1 fails test_unicode on HP-UX ia64
by Guido van Rossum Sept. 20, 2005

Sept. 20, 2005

I just built and ran the latest Python 2.4.2c1 from CVS on our HP-UX Itanium 2 box. sys.maxint is 9223372036854775807 on this box. I get the following failure from test_unicode (all other tests pass): File "/var/tmp/guido/p4/Lib/test/test_unicode.py", line 553, in test_codecs_errors self.assertEqual(u'Andr\202 x'.encode('ascii','replace'), "Andr? x") AssertionError: 'Andr x' != 'Andr? x' When I try it on the command line I get the same result: Python 2.4.2c1 (#4, Sep 20 2005, 09:15:22)… [View More]

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Re: [Python-Dev] os.path.diff(path1, path2)
by Delaney, Timothy (Tim) Sept. 20, 2005

Sept. 20, 2005

Greg Ewing wrote: > Matthias Andreas Benkard wrote: > >> /home -> usr/home >> /usr >> /usr/home >> >> What does os.path.diff("/home/", "/usr/") yield? "../usr/", I would >> presume? But that's obviously wrong: > > IMO, the relpath method should just work textually on > the pathnames. It's up to the user to ensure it makes > sense to do so, e.g. by resolving symlinks beforehand > if necessary. In addition, I would presume that … [View More]

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