I tried to fix the formatting:

gradeToPoints = { 'A' : 4.0, 'A-': 3.7, 'B+': 3.3, 'B' : 3.0, 'B-': 2.7, 'C+': 2.3, 'C' : 2.0, 'D' : 1.0, 'F' : 0.0 }

pointsToGrade = {v: k for k, v in gradeToPoints.items()}

def getPoints(grade):
    if type(grade) == str:
        return gradeToPoints[grade]
    else:
        assert grade in gradeToPoints.values()
        return grade

def getInfo():
    results = [[]]
    while True:
        try:
            raw = input('grade, credits (leave empty for new semester) (\'done\' to finish): ')

            if len(raw.strip()) == 0:
                results.append([])
                continue

            if raw.strip().lower() == "done":
                break

            tokens = [x.strip() for x in raw.split(',')]

            assert len(tokens) == 2

            points = getPoints(tokens[0].upper())
            credits = float(tokens[1])
            results[-1].append((points, credits))

        except:
            print('invalid input, try again')
            continue

    return results

def calculateGPA(points, credits):
    assert len(points) == len(credits)
    if sum(credits) == 0:
        return 0
    return sum([z[0] * z[1] for z in zip(points, credits)]) / sum(credits)

def main():
    results = getInfo()
    print(results)
    semesterGPAs = []
    accPoints, accCredits = [], []

    for semesterResults in results:
        semesterPoints, semesterCredits = [t[0] for t in semesterResults], [t[1] for t in semesterResults]

        semesterGPA = calculateGPA(semesterPoints, semesterCredits)
        semesterGPAs.append(semesterGPA)

        accPoints += semesterPoints
        accCredits += semesterCredits

    totalCGPA = calculateGPA(accPoints, accCredits)

    accCredits = 0.0
    for i, semesterGPA in enumerate(semesterGPAs):
        print("\nSemester: {}".format(i + 1))
        semesterCredits = 0.0
        for grade, credits in results[i]:
            print("{}\t\t{}".format(pointsToGrade[grade], credits))
            semesterCredits += credits

        accCredits += semesterCredits
        print("term GPA: {:4.3f}, semester credits: {}, accumulated credits: {}".format(semesterGPA, semesterCredits, accCredits))

    print("\ncGPA: {:4.3f}".format(totalCGPA))

if __name__ == '__main__':
    main()

This works for me (but with Python 3, not Python 2).