Question

Question:

How many days there was a 9am humidity level that reached above 80%, somewhere among all the weather stations in our dataset. Use the climate_data_Dec2017.csv file and make sure you don't count the same day more than once.

Partial Dataset for climate_data_Dec2017.csv:

Date,State,City,Station Code,Minimum temperature (C),Maximum temperature (C),Rainfall (mm),Evaporation (mm),Sunshine (hours),Direction of maximum wind gust,Speed of maximum wind gust (km/h),9am Temperature (C),9am relative humidity (%),3pm Temperature (C),3pm relative humidity (%)
2017-12-25,VIC,Melbourne,086338,15.1,21.4,0,8.2,10.4,S,44,17.2,57,20.7,54
2017-12-25,VIC,Bendigo,081123,11.3,26.3,0,,,ESE,46,17.2,53,25.5,25
2017-12-25,QLD,Gold Coast,040764,22.3,35.7,0,,,SE,59,29.2,53,27.7,67
2017-12-25,SA,Adelaide,023034,13.9,29.5,0,10.8,12.4,SE,43,18.6,42,27.7,17
2017-12-25,QLD,Brisbane,040913,22.5,36.2,0,11.0,10.0,WSW,61,29.5,53,32.3,53
2017-12-25,QLD,Townsville,032040,24.8,32.5,0,,,NNE,41,29.1,55,31.1,48
2017-12-25,QLD,Cairns,031011,20.3,33.3,0,,,E,41,29.2,59,32.4,45
2017-12-25,NSW,Wollongong,068228,15.9,21.3,7.6,,,SSW,48,18.5,80,19.5,70
2017-12-25,NSW,Newcastle,061055,19.8,21.6,0.6,,,S,48,20.2,83,20.9,74
2017-12-25,VIC,Ballarat,089002,8.5,21.4,0,,,SSE,54,13.3,62,21.1,40
2017-12-25,QLD,Sunshine C,040861,20.2,31.5,0,,,NNE,43,28.9,62,28.8,61
2017-12-25,NSW,Canberra,070351,13.4,23.0,0,,,ESE,39,15.0,66,21.9,47
2017-12-25,NSW,Albury,072160,14.7,29.1,0,,,SSE,37,18.7,42,26.6,32
2017-12-25,QLD,Toowoomba,041529,19.5,32.0,0,,,E,61,24.4,68,31.2,39
2017-12-25,VIC,Geelong,087184,14.1,21.6,0,,,S,41,16.7,58,19.9,53
2017-12-25,NT,Darwin,014015,24.0,27.6,20.0,6.6,0.0,NNE,46,25.4,91,27.3,81
2017-12-25,WA,Perth,009021,19.7,33.1,0,11.0,13.3,SW,39,27.8,34,31.1,29
2017-12-26,VIC,Ballarat,089002,10.8,29.1,0,,,SE,56,17.3,59,27.1,30
2017-12-26,NSW,Canberra,070351,10.8,22.4,0,,,E,39,18.3,57,21.8,48
2017-12-26,QLD,Brisbane,040913,19.0,29.7,54.8,12.4,7.5,E,26,25.2,77,28.8,56
2017-12-26,NSW,Newcastle,061055,18.5,22.5,3.8,,,SE,43,21.1,76,21.7,79
2017-12-26,SA,Adelaide,023034,18.0,33.3,0,11.4,12.7,E,43,25.7,23,28.6,28
2017-12-26,QLD,Toowoomba,041529,16.4,28.4,0,,,E,74,23.9,65,22.7,79
2017-12-26,WA,Perth,009021,15.4,27.4,0,9.0,13.2,SW,41,22.3,59,25.7,45
2017-12-26,VIC,Bendigo,081123,12.8,31.3,0,,,SE,41,20.5,50,30.3,27
2017-12-26,QLD,Gold Coast,040764,20.4,27.9,11.6,,,SSE,52,24.7,87,25.8,81
2017-12-26,VIC,Geelong,087184,12.5,26.6,0,,,SSE,31,18.9,69,23.8,50
2017-12-26,VIC,Melbourne,086338,12.5,30.5,0,8.0,12.9,SSE,37,17.4,66,27.0,43
2017-12-26,QLD,Cairns,031011,22.0,33.0,0,,,ENE,33,29.2,61,31.1,56
2017-12-26,NSW,Wollongong,068228,17.8,24.1,0,,,ENE,41,21.3,59,23.9,55
2017-12-26,QLD,Sunshine C,040861,19.9,28.6,7.4,,,ESE,33,28.4,67,27.6,68
2017-12-26,QLD,Townsville,032040,23.4,32.4,0,,,NE,37,29.9,52,30.4,50
2017-12-26,NSW,Albury,072160,14.0,30.7,0,,,NNE,31,21.6,46,29.2,26
2017-12-26,NT,Darwin,014015,24.6,31.6,8.0,4.6,1.4,NNW,56,26.7,90,30.3,72
2017-12-27,WA,Perth,009021,14.5,26.5,0,11.8,12.3,SSW,54,21.4,49,25.5,34
2017-12-27,NSW,Wollongong,068228,18.8,25.1,0,,,NE,43,21.8,77,23.3,72
2017-12-27,VIC,Geelong,087184,14.9,37.2,0,,,N,41,26.4,46,35.9,20
2017-12-27,QLD,Sunshine C,040861,21.5,28.8,1.4,,,SE,33,26.5,73,27.6,66

Coding language is python

Expected output (print it out):

There were 6 days with 9am humidity levels over 80%.

Answer 1

If you have any doubts, please give me comment...

Code:

myDict = {}

isFirstLine = True

tot = 0

count = 0

ans = 0

for rows in open("climate_data_Dec2017.csv"):

if isFirstLine:

isFirstLine = False

else:

columns = rows.strip("\n").split(",")

date = columns[0]

station = columns[3]

humid = float(columns[12])

if humid>80:

if date not in myDict:

myDict[date] = []

myDict[date].append(humid)

tot += humid

ans = len(myDict)

print("There were "+str(ans)+" days with 9am humidity level over 80%.")