text: #!/usr/bin/env python3
  
  #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  # Copyright 2012 California Institute of Technology. ALL RIGHTS RESERVED.
  # 
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  # 
  # http://www.apache.org/licenses/LICENSE-2.0
  # 
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  # 
  # United States Government Sponsorship acknowledged. This software is subject to
  # U.S. export control laws and regulations and has been classified as 'EAR99 NLR'
  # (No [Export] License Required except when exporting to an embargoed country,
  # end user, or in support of a prohibited end use). By downloading this software,
  # the user agrees to comply with all applicable U.S. export laws and regulations.
  # The user has the responsibility to obtain export licenses, or other export
  # authority as may be required before exporting this software to any 'EAR99'
  # embargoed foreign country or citizen of those countries.
  #
  # Author: Giangi Sacco
  #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  
  
  
  #!/usr/bin/env python3
  #~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  #
  # Author: Giangi Sacco
  # Copyright 2012, 2015 by the California Institute of Technology.
  # ALL RIGHTS RESERVED.
  # United States Government Sponsorship acknowledged. Any commercial use must be
  # negotiated with the Office of Technology Transfer at the
  # California Institute of Technology.
  #
  import gzip
  import os
  def is_gzipfile(filename):
      fp = gzip.GzipFile(filename)
      #since it fails for non gz file just try and catch
      try:
          s = fp.read()
          ret = True
      except OSError:
          ret = False
      return ret
  class GZipFile:
      def __init__(self,filename):
          self._filename = filename
      
      def extractall(self,path):
          try:
              os.mkdir(path)
          except Exception:
              pass
          fp = gzip.GzipFile(self._filename)
          s = fp.read()
          fp.close()
          #remove last extension
          fp = open(os.path.join(path,'.'.join(os.path.basename(self._filename).split('.')[:-1])),'wb')
          fp.write(s)
          fp.close()
          