Above is the data txt file.

Modify your function from the following python code to take only the filename as an argument. It should return a dictionary, D, that encodes all of the data so you can do e.g.: D['MARS']['Ring System?'] and output No. Print the entire output of D['MARS'] (with a clean format) as a check.

# function to retrieve the planet data def planet_data(filename,col_id,row_id):

# chaning the row id, col id to lower case row_id=row_id.lower() col_id=col_id.lower()

# opening the file f=open('planetary-fact-sheet.txt','r') cols={} count=0 # empty list t=[]

# looping through every line for number,line in enumerate(f): # removing the space at the end line=line.strip() # skipping first two lines if number ==0 or number ==1: continue # getting the planet names for column ids if number==2: planets=line.split('\t') for p in planets: p=p.strip() if p not in cols: count+=1 cols[p]=count else:

# getting the planet data r=[] data=line.split('\t') for c in data: r.append(c) t.append(r) flag=0

# checking for column id planet_name='' planet_index='' for key in cols.keys(): if col_id in key.lower(): planet_name=key planet_index=cols[key] flag=1 i=-1 data_name='' for index,item in enumerate(t): for data in item: data=data.lower() if row_id in data: data_name=data i=index break if i==-1 and flag ==0: print('Row id and column are not valid') return elif i==-1: print('Row id is not valid') elif flag==0: print('Col id is not valid') else: print( '%s : %s = %s ' %(planet_name.capitalize(),data_name.capitalize(),str(t[i][planet_index])))

Some information about the planets in our solar system # Adapted from http:/ssdc.gsfc.nasa.gov/planetary/factsheet/ MERCURY URANUS VENUS EARTH MOON PLUTO MARS JUPITER SATURN NEPTUNE 86.8 102 Mass (10~24kg) 0.330 4.875.97 .073 0.642 1898 568 0.0146 Diameter (km 4879 12,104 12,756 3475 6792 142,984 120,536 51,118 49,528 2370 Density (kg/m 3) 1638 Gravity (m/s 2) 37 5427 5243 5514 3340 3933 1326 687 1271 2095 8.7 35.521.3 10.7 -17.2 10.7 17.2 3.7 23.1 9.0 11.0 Escape Velocity (km/s) 4.3 23.5 Rotation Period (hours) 1407.6 -5832.5 23.9 655.7 24.6 9.9 16.1 Length of Day (hours) 4222.6 2802.0 24.0 708.7 24.79.9 16.1 Distance from Sun (1046 km) 2872.5 4495.1 5906.4 Perihelion (10 6 km) 46.0 107.5 147.1 0.363* 206.6 740.5 1352.6 2741.3 4444.5 4436.8 Aphelion (10 6 km) 4545.7 7375.9 Orbital Period (days) 88. 224.7 365.2 27.3 687. 4331 10,747 30,589 59,800 90,560 Orbital Velocity (km/s) 47.435. 29.8 1.0 5.4 Orbital Inclination (degrees) 7.0 0.8 10.4 11.2 2.4 59.5 1.3 -153.3 153.3 57.9 108.2 149.6 0.384* 227.9 778.6 1433.5 69.8 108.9 152.1 0.406* 249.2 816.6 1514.5 3003.6 24.1 13.1 9.7 6.8 4.7 0.0 5.1 1.9 1.3 2.5 1.8 17.2