Question

Python 12.10 LAB: Sorting TV Shows (dictionaries and lists)

Write a program that first reads in the name of an input file and then reads the input file using the file.readlines() method. The input file contains an unsorted list of number of seasons followed by the corresponding TV show. Your program should put the contents of the input file into a dictionary where the number of seasons are the keys, and a list of TV shows are the values (since multiple shows could have the same number of seasons).

Sort the dictionary by key (least to greatest) and output the results to a file named output_keys.txt, separating multiple TV shows associated with the same key with a semicolon (;). Next, sort the dictionary by values (alphabetical order), and output the results to a file named output_titles.txt.

My current code:

def readFile(filename):
dict = {}
with open(filename, 'r') as infile:
lines = infile.readlines()
for index in range(0, len(lines) - 1, 2):
if lines[index].strip()=='':continue
count = int(lines[index].strip())
name = lines[index + 1].strip()
if count in dict.keys():
name_list = dict.get(count)
name_list.append(name)
name_list.sort()
else:
dict[count] = [name]
print(count,name)

return dict

def output_keys(dict, filename):
with open(filename,'w+') as outfile:
for key in sorted(dict.keys()):
outfile.write('{}: {}\n'.format(key,'; '.join(dict.get(key))))
print('{}: {}\n'.format(key,';'.join(dict.get(key))))

def output_titles(dict, filename):
titles = []
for title in dict.values():
titles.extend(title)
with open(filename,'w+') as outfile:

for title in sorted(titles):
outfile.write('{}\n'.format(title))
print(title)

def main():
filename = input('Enter input file name: ')
dict = readFile(filename)
if dict is None:
print('Error: Invalid file name provided: {}'.format(filename))
return
print(dict)
output_filename_1 ='output_keys.txt'
output_filename_2 ='output_titles.txt'

output_keys(dict,output_filename_1)
output_titles(dict,output_filename_2)

main()

output from my incorrect code:

ל-צדד.חייו: אמנם יורים: מ:Ice הבא:. ד. : "באה: מבנןו ;:בזה שין- - - י י 1 441 : . --! אין -*י* אי י' י" - - - ין ני" די. 3 הילארי די- : טיאר: :*-יז- אדרבה אויך

Better screen shot of image results
https://i.ibb.co/hcjT5rd/code-results.png

Answer 1

def readFile(filename):

dic = {}

try:

with open(filename,'r') as infile:

lines = infile.readlines()

for li in lines:

key,value =li.strip().split(maxsplit=1)

if int(key) in dic:

dic[int(key)].append(value)

else:

dic[int(key)]=[value]

except:

return None

return dic

def process(dec):

temp1 = {}

temp2 = {}

for key in sorted(dec.keys()):

temp1[key]=list(set(dec[key]))

temp2[key]=sorted(list(set(dec[key])))

ans1 = ""

ans2 = ""

for key,value in temp1.items():

ans1+=str(key)+': '+'; '.join(value)+'\n'

for key,value in temp2.items():

ans2+=str(key)+': '+'; '.join(value)+'\n'

return ans1[:-1],ans2[:-1]

def writeFile(ans,filename):

with open(filename,'w') as outfile:

outfile.write(ans)

def main():

filename = input('Enter input file name: ')

dic = readFile(filename)

if dic is None:

print('Error: Invalid file name povided: {}'.format(filename))

return

output_filename_1 ='output_keys.txt'

output_filename_2 ='output_titles.txt'

ans1,ans2 = process(dic)

writeFile(ans1,output_filename_1)

writeFile(ans2,output_filename_2)

main()

 def readFile(filename): dic = {} try: with open(filename,'r') as infile: lines = infile.readlines() for li in lines: key,value =li.strip().split(maxsplit=1) if int(key) in dic: dic[int(key)].append(value) else: dic[int(key)]=[value] except: return None return dic def process(dec): temp1 = {} temp2 = {} for key in sorted(dec.keys()): temp1[key]=list(set(dec[key])) temp2[key]=sorted(list(set(dec[key]))) ans1 = "" ans2 = "" for key,value in temp1.items(): ans1+=str(key)+': '+'; '.join(value)+'\n' for key,value in temp2.items(): ans2+=str(key)+': '+'; '.join(value)+'\n' return ans1[:-1],ans2[:-1] def writeFile(ans,filename): with open(filename,'w') as outfile: outfile.write(ans) def main(): filename = input('Enter input file name: ') dic = readFile(filename) if dic is None: print('Error: Invalid file name povided: {}'.format(filename)) return output_filename_1 ='output_keys.txt' output_filename_2 ='output_titles.txt' ans1,ans2 = process(dic) writeFile(ans1,output_filename_1) writeFile(ans2,output_filename_2) main()