navtex_replace.py

# define our method
def replace_all(text, dic):
    for i, j in dic.iteritems():
        text = text.replace(i, j)
    return text
 
navtex = 'navtex string here'
 
# our dictionary with our key:values.
dic = {'BACK':'Backing','KMH':'Km/h','QUAD':'Quadrant','BECMG':'Becoming','KT':'Knots','RPDY':'Rapidly','BLDN':'Building','LAT/LONG':'Latitude/Longitude','SCT':'Scattered','C-FRONT':'Cold front','LOC':'Locally','SEV':'Severe','SVR':'Severe','DECR':'Decreasing','M':'Metres','SHWRS':'Showeres','SH':'showers','DPN':'Deepening','MET':'Meteo','SIG':'Significant','EXP':'Expected,''MOD':'Moderate','SLGT':'slight','SLT':'Slight','FCST':'Forecsat','MOV':'moving/move','MVG':'Moving/Move','SLWY':'Slowly','FLN':'Filling','NC':'No change','STNR':'Stationary','FLW':'Following','NM':'Nautical miles','STRG':'Strong','FM':'From','NOSIG':'No significant change','TEMPO':'Temporarily/Temporary','FRQ':'Frequent/frequency','NXT':'Next','TEND':'Further Outlooks','HPA':'HectoPascal','OCNL':'Ocasionally','VEER':'Veering','HVY':'Heavy','O-FRONT':'Occluded front','OFNT':'Occluded front','VIS':'Visibility','IMPR':'Improving/Improve','POSS':'Possible','VRB':'Variable','INCR':'Increasing','PROB':'Probability/Probable','W-FRONT':'Warm front','WFNT':'Warm Front','INTSF':'Intensifying/Intensify','QCKY':'Quickly','WKN':'Weakening','ISOL':'Isolated','QSTNR':'Quasi-stationary'}

print replace_all(navtex, dic)