Question

i need help using python ( spyder)

only use files , loops if needed

is statement

do not use , def function or any other.

Exercise 1: Daily temperature is recorded for some weeks in files (templ.txt", temp2.txt, and temp3.txt; provided in the MOODLE). The first line contains number of weeks and the rest of the lines each represent the week number followed by temperature on the seven days of that week (see samples input files below). Write a python program that reads daily temperatures from an input file and compute the average temperature for each week. Display the results on the screen as shown in the output sample below Sometimes some missing (erroneous) temperature values are entered by mistake or maybe not available at al. Two examples of missing temperature values are: (2a') in week 3 and (-) in week 2 as in input sample file "empl.txt". Your program should Handle IOError exception if input file does not exist Raise and handle valueError exception whenever i Raise and handle RuntimeEror exception if there are extra data in input file s appropriate Try to run your code using different input file each time 1 20 22 23 21 24 20 25 2 21 25 26 24 21 22 3 28 2a 30 31 25 27 24 4 23 22 20 26 30 28 29 120 22 23 21 24 20 25 2 21 25 26 25 24 21 22 3 28 26 30 31 25 27 24 423 22 20 26 30 28 29 20 22 23 21 24 20 25 2 21 25 26 25 24 21 22 328 26 30 31 25 27 24 Sample input fileI (tempI.txt) Sample input file2 (templtt) Sample input file3 (temp2.txt) Week Avg-Temp Week Avg-Temp Week Avg-Temp 1 22.14 File contents invalid. invalid literal for in0 with base 10: 1 22.14 2 23.43 3 2729 22.14 2 23.00 3 23.29 Error: End of file expected. Sample output for file I Sample output for file 2 Sample output for file 3

Answer 1

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Before running the program you should actually create temp1.txt, temp2.txt and temp3.txt files like below. Otherwise program will throw errors.

Unix Terminal> cat temp1.txt

3

1 20 22 23 21 24 20 25

2 21 25 26 - 24 21 22

3 28 2a 30 31 25 27 24

4 23 22 20 26 30 28 29

Unix Terminal> cat temp2.txt

3

1 20 22 23 21 24 20 25

2 21 25 26 25 24 21 22

3 28 26 30 31 25 27 24

4 23 22 20 26 30 28 29

Unix Terminal> cat temp3.txt

3

1 20 22 23 21 24 20 25

2 21 25 26 25 24 21 22

3 28 26 30 31 25 27 24

Unix Terminal>

Code:

#!/usr/local/bin/python3

def main():
   # reading file name from the user
   print('Enter input file? ')
   file_name = input().strip()

   # flag variable to determine if prog failed or successful
   is_prog_failed = False

   try:
       # reading the file contents into file_cont list
       file_cont = list()
       fp = open(file_name)
       for each_line in fp:
           fields = each_line.strip().split(' ')
           file_cont.append(fields)
       weeks = int(file_cont[0][0])
       no_of_recs = 0
       wk = []

       # iterating through each line in file
       for each_rec in file_cont[1:]:
           # validation on whether data is correct
           if len(each_rec) != 8:
               raise RuntimeError
           if no_of_recs > weeks:
               raise RuntimeError

           sum = 0
           for fields in each_rec[1:]:
               num = int(fields)
               sum += num  
           # calculating the average temperature
           avg = sum / (len(each_rec) - 1)
           no_of_recs += 1

           if no_of_recs > weeks:
               raise RuntimeError
          
           wk.append(avg)
   except IOError as e:
       is_prog_failed = True
       print('File does not exist it seems. please check')
       print(str(e))

   except ValueError as e:
       is_prog_failed = True
       print('=' * 20)
       print('Week\tAvg-Temp')
       print('=' * 20)
       for indx, value in enumerate(wk):
           print('%5d\t%.2f' % (indx+1, value))
       print('File contents invalid')
       print(str(e))

   except RuntimeError as e:
       is_prog_failed = True
       print('=' * 20)
       print('Week\tAvg-Temp')
       print('=' * 20)
       for indx, value in enumerate(wk):
           print('%5d\t%.2f' % (indx+1, value))
       print('Error: End of file expected.')
       print(str(e))

   # when program successfully executes without any failures
   if not is_prog_failed:
       print('=' * 20)
       print('Week\tAvg-Temp')
       print('=' * 20)
       for indx, value in enumerate(wk):
           print('%5d\t%.2f' % (indx+1, value))

if __name__=='__main__':
   main()

Code screenshot:

#1 /usr/local/bin/python3 def main(): # reading file name from the user print ('Enter input file? file_name-input().strip) # flag variable to determine if prog failed or successful is_prog_failed False try: # reading the file contents into file-cont List file_cont -list() fp open(file_name) for each_line in fp: fields= each-Line . strip),split (' file_cont.append (fields) ') weeksint(file_cont [0] [0]) no_of_recs0 wk= [] # iterating through each line in file for each rec in file cont [1:1: # validation on whether data is correct if len (each rec) !8: raise RuntimeError if no of recs >weeks: raise RuntimeError sum = 0 for fields in each_rec[1:]: numint(fields) sum += num # calculating the average temperature avgsum/(len(each_rec) -1) no_of_recs1 if no_of_recs > weeks: raise RuntimeError wk.append (avg)

except IOError as e: is_prog_failed True print('File does not exist it seems. please check') print(str(e)) except ValueError as e: is_prog_failed True print('20) print( 'Week\tAvg-Temp') print('20) for indx, value in enumerate(wk): print('85d\t%.2f' % (indx+1, value)) print('File contents invalid') print(str(e)) except RuntimeError as e: is_prog_failed True print ('-' * 20) print( 'Week tAvg-Temp) print('-20) for indx, value in enumerate(wk): print('85d\t%.2f' % (indx+1, value)) print('Error: End of file expected.') print(str(e)) # when program successfully executes without any failures if not'is_prog_fai led: print(''20) print( 'Week\ tAvg-Temp') print('20) for indx, value in enumerate(wk): print('85d\t%.2f. % (indx+1, value)) f name main' main
Code output screenshot:

Unix Terminal> python3 temp_process.py Enter input file? temp1.txt Week Avg-Temp 1 22.14 File contents invalid invalid literal for int) with base 10: '-' Unix Terminal> python3 temp_process.py Enter input file? temp2.txt Week Avg-Temp 1 22.14 2 23.43 3 27.29 Error: End of file expected. Unix Terminal> python3 temp_process.py Enter input file? temp3.txt WeekAvg-Temp 1 22.14 2 23.43 3 27.29 Unix Terminal>