old_contents: #!/usr/bin/env python
  from __future__ import absolute_import
  
  import locale
  import logging
  import os
  import warnings
  
  import sys
  
  # 2016-06-17 barry@debian.org: urllib3 1.14 added optional support for socks,
  # but if invoked (i.e. imported), it will issue a warning to stderr if socks
  # isn't available.  requests unconditionally imports urllib3's socks contrib
  # module, triggering this warning.  The warning breaks DEP-8 tests (because of
  # the stderr output) and is just plain annoying in normal usage.  I don't want
  # to add socks as yet another dependency for pip, nor do I want to allow-stderr
  # in the DEP-8 tests, so just suppress the warning.  pdb tells me this has to
  # be done before the import of pip.vcs.
  from pip._vendor.urllib3.exceptions import DependencyWarning
  warnings.filterwarnings("ignore", category=DependencyWarning)  # noqa
  
  import pip._internal.utils.inject_securetransport  # noqa
  from pip._internal.cli.autocompletion import autocomplete
  from pip._internal.cli.main_parser import parse_command
  from pip._internal.commands import create_command
  from pip._internal.exceptions import PipError
  from pip._internal.utils import deprecation
  from pip._vendor.urllib3.exceptions import InsecureRequestWarning
  
  logger = logging.getLogger(__name__)
  
  # Hide the InsecureRequestWarning from urllib3
  warnings.filterwarnings("ignore", category=InsecureRequestWarning)
  
  
  def main(args=None):
      if args is None:
          args = sys.argv[1:]
  
      # Configure our deprecation warnings to be sent through loggers
      deprecation.install_warning_logger()
  
      autocomplete()
  
      try:
          cmd_name, cmd_args = parse_command(args)
      except PipError as exc:
          sys.stderr.write("ERROR: %s" % exc)
          sys.stderr.write(os.linesep)
          sys.exit(1)
  
      # Needed for locale.getpreferredencoding(False) to work
      # in pip._internal.utils.encoding.auto_decode
      try:
          locale.setlocale(locale.LC_ALL, '')
      except locale.Error as e:
          # setlocale can apparently crash if locale are uninitialized
          logger.debug("Ignoring error %s when setting locale", e)
      command = create_command(cmd_name, isolated=("--isolated" in cmd_args))
  
      return command.main(cmd_args)
  
new_contents: #!/usr/bin/env python
  from __future__ import absolute_import
  
  import locale
  import logging
  import os
  import sys
  import warnings
  
  # We ignore certain warnings from urllib3, since they are not relevant to pip's
  # usecases.
  from pip._vendor.urllib3.exceptions import (
      DependencyWarning,
      InsecureRequestWarning,
  )
  
  import pip._internal.utils.inject_securetransport  # noqa
  from pip._internal.cli.autocompletion import autocomplete
  from pip._internal.cli.main_parser import parse_command
  from pip._internal.commands import create_command
  from pip._internal.exceptions import PipError
  from pip._internal.utils import deprecation
  
  # Raised when using --trusted-host.
  warnings.filterwarnings("ignore", category=InsecureRequestWarning)
  # Raised since socks support depends on PySocks, which may not be installed.
  #   Barry Warsaw noted (on 2016-06-17) that this should be done before
  #   importing pip.vcs, which has since moved to pip._internal.vcs.
  warnings.filterwarnings("ignore", category=DependencyWarning)
  
  logger = logging.getLogger(__name__)
  
  
  def main(args=None):
      if args is None:
          args = sys.argv[1:]
  
      # Configure our deprecation warnings to be sent through loggers
      deprecation.install_warning_logger()
  
      autocomplete()
  
      try:
          cmd_name, cmd_args = parse_command(args)
      except PipError as exc:
          sys.stderr.write("ERROR: %s" % exc)
          sys.stderr.write(os.linesep)
          sys.exit(1)
  
      # Needed for locale.getpreferredencoding(False) to work
      # in pip._internal.utils.encoding.auto_decode
      try:
          locale.setlocale(locale.LC_ALL, '')
      except locale.Error as e:
          # setlocale can apparently crash if locale are uninitialized
          logger.debug("Ignoring error %s when setting locale", e)
      command = create_command(cmd_name, isolated=("--isolated" in cmd_args))
  
      return command.main(cmd_args)
  
subject: Simplify ignoring urllib3 warnings