docs: def method_codes_to_geomagia(magic_method_codes,geomagia_table):
      """
      Looks at the MagIC method code list and returns the correct GEOMAGIA code number depending 
      on the method code list and the GEOMAGIA table specified. Returns O, GEOMAGIA's "Not specified" value, if no match.
  
      When mutiple codes are matched they are separated with -
  
      """
      codes=magic_method_codes
      geomagia=geomagia_table.lower()
      geomagia_code='0'
     
      if geomagia=='alteration_monit_corr':
          if  "DA-ALT-V" or "LP-PI-ALT-PTRM" or "LP-PI-ALT-PMRM" in codes:
              geomagia_code='1' 
          elif "LP-PI-ALT-SUSC" in codes:
              geomagia_code='2' 
          elif "DA-ALT-RS" or "LP-PI-ALT-AFARM" in codes:
              geomagia_code='3' 
          elif "LP-PI-ALT-WALTON" in codes:
              geomagia_code='4' 
          elif "LP-PI-ALT-TANGUY" in codes:
              geomagia_code='5' 
          elif "DA-ALT" in codes:
              geomagia_code='6'   #at end to fill generic if others don't exist
          elif "LP-PI-ALT-FABIAN" in codes:
              geomagia_code='7' 
  
      if geomagia=='md_checks':
          if ("LT-PTRM-MD" in codes) or ("LT-PMRM-MD" in codes):
              geomagia_code='1:' 
          if ("LP-PI-BT-LT" in codes) or ("LT-LT-Z" in codes):
              if "0" in geomagia_code: 
                  geomagia_code="23:"
              else:
                  geomagia_code+='2:' 
          geomagia_code=geomagia_code[:-1] 
  
      if geomagia=='anisotropy_correction':
          if  "DA-AC-AMS" in codes:
              geomagia_code='1' 
          elif "DA-AC-AARM" in codes:
              geomagia_code='2' 
          elif "DA-AC-ATRM" in codes:
              geomagia_code='3' 
          elif "LT-NRM-PAR" in codes:
              geomagia_code='4' 
          elif "DA-AC-AIRM" in codes:
              geomagia_code='6' 
          elif "DA-AC" in codes:  #at end to fill generic if others don't exist
              geomagia_code='5' 
  
      if geomagia=='cooling_rate':
          if  "DA-CR" in codes:  #all current CR codes but CR-EG are a 1 but may change in the future 
              geomagia_code='1' 
          if "DA-CR-EG" in codes:
              geomagia_code='2' 
  
      if geomagia=='dm_methods':
          if  "LP-DIR-AF" in codes:
              geomagia_code='1' 
          elif "LT-AF-D" in codes:
              geomagia_code='1' 
          elif "LT-AF-G" in codes:
              geomagia_code='1' 
          elif "LT-AF-Z" in codes:
              geomagia_code='1' 
          elif "LP-DIR-T" in codes:
              geomagia_code='2' 
          elif "LT-AF-Z" in codes:
              geomagia_code='2' 
          elif "LP-DIR-M" in codes:
              geomagia_code='5' 
          elif "LT-M-Z" in codes:
              geomagia_code='5' 
  
      if geomagia=='dm_analysis':
          if  "DE-BFL" in codes:
              geomagia_code='1' 
          elif "DE-BLANKET" in codes:
              geomagia_code='2' 
          elif "DE-FM" in codes:
              geomagia_code='3' 
          elif "DE-NRM" in codes:
              geomagia_code='6' 
  
      if geomagia=='specimen_type_id':
          if  "SC-TYPE-CYC" in codes:
              geomagia_code='1' 
          elif  "SC-TYPE-CUBE" in codes:
              geomagia_code='2' 
          elif  "SC-TYPE-MINI" in codes:
              geomagia_code='3' 
          elif  "SC-TYPE-SC" in codes:
              geomagia_code='4' 
          elif  "SC-TYPE-UC" in codes:
              geomagia_code='5' 
          elif  "SC-TYPE-LARGE" in codes:
              geomagia_code='6' 
  
      return geomagia_code