python - How to calculate GPA assignment -

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• gpa python assignment [closed] 1 answer

i have programming assignment opens file , calculates on gpa.

wherein a= 4, b = 3, c = 2, d = 1, e = 0 .txt file contains:

ecs10 4

ecs20 b 3

jpn4 c 5

phy9a d 5

the last element amount of credits , letters before grades. able last element , letters im stuck. keep using if statements in loop numbers out of letters cant seem make work. (im new @ programming kind of appreciated) thanks!

here's i've got far:

f = open("grade_file.txt", "r")

line = f.readlines()

isolates numbers

for in (line):

i = i.strip()  print(i[-1:]) 

isolates letters

print("\n")

for in (line):

i = i.strip()  print(i[-3:-2]) 

gpa calculated multiplying amount of credits grade received , divided total number of credits.

try piece of code:

#!/usr/bin/env python3.3-32  grade_mapping = {'a':4, 'b':3, 'c':2, 'd':1, 'e':0} weighted_sum = 0 credits = 0  line in open("grade_file.txt", "r"):     elems = line.split(' ')     weighted_sum += grade_mapping[elems[1]] * int(elems[2])     credits += float(elems[2])  gpa = weighted_sum / credits print(gpa) 

i used file test:

ecs10 4 ecs20 b 3 jpn4 c 5 phy9a d 5 

the result should 2.35294117647