text: #! /usr/bin/env python
  
  # Sanity checker for time.strftime
  
  import time, calendar, sys, os, re
  from test.test_support import verbose
  
  def main():
      global verbose
      # For C Python, these tests expect C locale, so we try to set that
      # explicitly.  For Jython, Finn says we need to be in the US locale; my
      # understanding is that this is the closest Java gets to C's "C" locale.
      # Jython ought to supply an _locale module which Does The Right Thing, but
      # this is the best we can do given today's state of affairs.
      try:
          import java
          java.util.Locale.setDefault(java.util.Locale.US)
      except ImportError:
          # Can't do this first because it will succeed, even in Jython
          import locale
          locale.setlocale(locale.LC_TIME, 'C')
      now = time.time()
      strftest(now)
      verbose = 0
      # Try a bunch of dates and times,  chosen to vary through time of
      # day and daylight saving time
      for j in range(-5, 5):
          for i in range(25):
              strftest(now + (i + j*100)*23*3603)
  
  def escapestr(text, ampm):
      """Escape text to deal with possible locale values that have regex
      syntax while allowing regex syntax used for the comparison."""
      new_text = re.escape(text)
      new_text = new_text.replace(re.escape(ampm), ampm)
      new_text = new_text.replace("\%", "%")
      new_text = new_text.replace("\:", ":")
      new_text = new_text.replace("\?", "?")
      return new_text
  
  def strftest(now):
      if verbose:
          print "strftime test for", time.ctime(now)
      nowsecs = str(long(now))[:-1]
      gmt = time.gmtime(now)
      now = time.localtime(now)
  
      if now[3] < 12: ampm='(AM|am)'
      else: ampm='(PM|pm)'
  
      jan1 = time.localtime(time.mktime((now[0], 1, 1) + (0,)*6))
  
      try:
          if now[8]: tz = time.tzname[1]
          else: tz = time.tzname[0]
      except AttributeError:
          tz = ''
  
      if now[3] > 12: clock12 = now[3] - 12
      elif now[3] > 0: clock12 = now[3]
      else: clock12 = 12
  
      # Make sure any characters that could be taken as regex syntax is
      # escaped in escapestr()
      expectations = (
          ('%a', calendar.day_abbr[now[6]], 'abbreviated weekday name'),
          ('%A', calendar.day_name[now[6]], 'full weekday name'),
          ('%b', calendar.month_abbr[now[1]], 'abbreviated month name'),
          ('%B', calendar.month_name[now[1]], 'full month name'),
          # %c see below
          ('%d', '%02d' % now[2], 'day of month as number (00-31)'),
          ('%H', '%02d' % now[3], 'hour (00-23)'),
          ('%I', '%02d' % clock12, 'hour (01-12)'),
          ('%j', '%03d' % now[7], 'julian day (001-366)'),
          ('%m', '%02d' % now[1], 'month as number (01-12)'),
          ('%M', '%02d' % now[4], 'minute, (00-59)'),
          ('%p', ampm, 'AM or PM as appropriate'),
          ('%S', '%02d' % now[5], 'seconds of current time (00-60)'),
          ('%U', '%02d' % ((now[7] + jan1[6])//7),
           'week number of the year (Sun 1st)'),
          ('%w', '0?%d' % ((1+now[6]) % 7), 'weekday as a number (Sun 1st)'),
          ('%W', '%02d' % ((now[7] + (jan1[6] - 1)%7)//7),
           'week number of the year (Mon 1st)'),
          # %x see below
          ('%X', '%02d:%02d:%02d' % (now[3], now[4], now[5]), '%H:%M:%S'),
          ('%y', '%02d' % (now[0]%100), 'year without century'),
          ('%Y', '%d' % now[0], 'year with century'),
          # %Z see below
          ('%%', '%', 'single percent sign'),
          )
  
      nonstandard_expectations = (
          # These are standard but don't have predictable output
          ('%c', fixasctime(time.asctime(now)), 'near-asctime() format'),
          ('%x', '%02d/%02d/%02d' % (now[1], now[2], (now[0]%100)),
           '%m/%d/%y %H:%M:%S'),
          ('%Z', '%s' % tz, 'time zone name'),
  
          # These are some platform specific extensions
          ('%D', '%02d/%02d/%02d' % (now[1], now[2], (now[0]%100)), 'mm/dd/yy'),
          ('%e', '%2d' % now[2], 'day of month as number, blank padded ( 0-31)'),
          ('%h', calendar.month_abbr[now[1]], 'abbreviated month name'),
          ('%k', '%2d' % now[3], 'hour, blank padded ( 0-23)'),
          ('%n', '\n', 'newline character'),
          ('%r', '%02d:%02d:%02d %s' % (clock12, now[4], now[5], ampm),
           '%I:%M:%S %p'),
          ('%R', '%02d:%02d' % (now[3], now[4]), '%H:%M'),
          ('%s', nowsecs, 'seconds since the Epoch in UCT'),
          ('%t', '\t', 'tab character'),
          ('%T', '%02d:%02d:%02d' % (now[3], now[4], now[5]), '%H:%M:%S'),
          ('%3y', '%03d' % (now[0]%100),
           'year without century rendered using fieldwidth'),
          )
  
      if verbose:
          print "Strftime test, platform: %s, Python version: %s" % \
                (sys.platform, sys.version.split()[0])
  
      for e in expectations:
          try:
              result = time.strftime(e[0], now)
          except ValueError, error:
              print "Standard '%s' format gave error:" % e[0], error
              continue
          if re.match(escapestr(e[1], ampm), result): continue
          if not result or result[0] == '%':
              print "Does not support standard '%s' format (%s)" % (e[0], e[2])
          else:
              print "Conflict for %s (%s):" % (e[0], e[2])
              print "  Expected %s, but got %s" % (e[1], result)
  
      for e in nonstandard_expectations:
          try:
              result = time.strftime(e[0], now)
          except ValueError, result:
              if verbose:
                  print "Error for nonstandard '%s' format (%s): %s" % \
                        (e[0], e[2], str(result))
              continue
          if re.match(escapestr(e[1], ampm), result):
              if verbose:
                  print "Supports nonstandard '%s' format (%s)" % (e[0], e[2])
          elif not result or result[0] == '%':
              if verbose:
                  print "Does not appear to support '%s' format (%s)" % (e[0],
                                                                         e[2])
          else:
              if verbose:
                  print "Conflict for nonstandard '%s' format (%s):" % (e[0],
                                                                        e[2])
                  print "  Expected %s, but got %s" % (e[1], result)
  
  def fixasctime(s):
      if s[8] == ' ':
          s = s[:8] + '0' + s[9:]
      return s
  
  main()
  