먼저 random 라이브러리와 time 라이브러리를 사용합니다.
random : 난수
time : 프로그램의 안정성

import random
import time

리스트 및 변수 선언

list_1 = [1,2,3,4,5,6,7,8,9,10] # 숫자 범위
list_2 = [1,2,3] # 더하기 뺴기 곱하기 선택
list_3 = [1,2]
list_4 = (range(1, 101))
a = 0
b = 0
c = 0
moksum = 0
list_temporary_1 = [] # 랜덤 선택한 숫자를 저장할 공백 리스트
list_temporary_3 = [] # 공백 리스트
list_temporary_2 = [] # 공백 리스트

 # 정답 임시저장
answer = 0


right = 0 # 맞은 문제
step = int(input("easy = 1 , normal = 2 , hard = 3")) # 단계 선택

1단계 문제

if step == 1: # 선택한 단계가 1단계 일떄
    moksum = 5 # 1단계 목숨
    for i in range(1,6):
        b = 0
        c = 0
        a = 0
        list_temporary_1.append(random.choice(list_1)) # 랜덤 선택
        list_temporary_2.append(random.choice(list_1)) # 랜덤 선택
        b = (list_temporary_1[0]) # 비교를 위한 저장
        c = (list_temporary_2[0])
        a = input(f"{(list_temporary_1)[0]} + {(list_temporary_2)[0]} = ??     ")
        print()
        print()
        print()
        del (list_temporary_1[0:])
        del (list_temporary_2[0:])
        del (list_temporary_3[0:])
        if int(a) - (int(b) + int(c)) == 0:
            right += 1
            print(f"현재목숨은{moksum}개 입니다")
        else:
            moksum -= 1
            if moksum == 0:
                break
            print(f"현재목숨은{moksum}개 입니다")
        if moksum == 0:
            break
        time.sleep(0.5)
    step = 0
    pass

2단계 문제

elif step == 2:
    moksum = 4
    for i in range(1,11):
        list_temporary_1.append(random.choice(list_1))
        list_temporary_2.append(random.choice(list_1))
        list_temporary_3.append(random.choice(list_3))
        if (list_temporary_3[0]) == 1: # 1이면 더하기 1단계와 동일
            b = 0
            c = 0
            a = 0
            b = (list_temporary_1[0])
            c = (list_temporary_2[0])
            a = input(f"{(list_temporary_1)[0]} + {(list_temporary_2)[0]} = ??     ")
            print()
            print()
            print()
            del (list_temporary_1[0:])
            del (list_temporary_2[0:])
            del (list_temporary_3[0:])
            if int(a) - (int(b) + int(c)) == 0:
                right += 1
                print(f"현재목숨은{moksum}개 입니다")
            else:
                moksum -= 1
                if moksum == 0:
                    break
                print(f"현재목숨은{moksum}개 입니다")
        elif (list_temporary_3[0]) == 2: # 2면 뺴기
            b = (list_temporary_1[0])
            c = (list_temporary_2[0])
            if ((list_temporary_1[0]) - (list_temporary_2[0])) <= 0: # 결과가 음수로 나올때
                a = input(f"{(list_temporary_2)[0]} - {(list_temporary_1)[0]} = ??     ")
                print()
                print()
                print()
                del (list_temporary_1[0:])
                del (list_temporary_2[0:])
                del (list_temporary_3[0:])
                if int(a) - (int(c) - int(b)) == 0:
                    right += 1
                    print(f"현재목숨은{moksum}개 입니다")
                else:
                    moksum -= 1
                    if moksum == 0:
                        break
                    print(f"현재목숨은{moksum}개 입니다")

            elif ((list_temporary_1[0]) - (list_temporary_2[0])) > 0: # 결과가 양수로 나올때
                a = input(f"{(list_temporary_1)[0]} - {(list_temporary_2)[0]} = ??     ")
                print()
                print()
                print()
                del (list_temporary_1[0:])
                del (list_temporary_2[0:])
                del (list_temporary_3[0:])
                if int(a) - (int(b) - int(c)) == 0:
                    right += 1
                    print(f"현재목숨은{moksum}개 입니다")
                else:
                    moksum -= 1
                    if moksum == 0:
                        break
                    print(f"현재목숨은{moksum}개 입니다") # 목숨이 0개면 코드 종료

        time.sleep(0.5)
    step = 0
    pass

3단계 문제

elif step == 3: # 3단계는 list_4를 사용해 더하기 뺴기는 1~ 100
    moksum = 3
    for i in range(1,16):
        list_temporary_3.append(random.choice(list_2))
        if (list_temporary_3[0]) == 1:
            list_temporary_1.append(random.choice(list_4))
            list_temporary_2.append(random.choice(list_4))
            b = 0
            c = 0
            a = 0
            b = (list_temporary_1[0])
            c = (list_temporary_2[0])
            a = input(f"{(list_temporary_1)[0]} + {(list_temporary_2)[0]} = ??     ")
            print()
            print()
            print()
            del (list_temporary_1[0:])
            del (list_temporary_2[0:])
            del (list_temporary_3[0:])
            if int(a) - (int(b) + int(c)) == 0:
                right += 1
                print(f"현재목숨은{moksum}개 입니다")
            else:
                moksum -= 1
                if moksum == 0:
                    break
                print(f"현재목숨은{moksum}개 입니다")
        elif (list_temporary_3[0]) == 2:
            list_temporary_1.append(random.choice(list_4))
            list_temporary_2.append(random.choice(list_4))
            b = (list_temporary_1[0])
            c = (list_temporary_2[0])
            if ((list_temporary_1[0]) - (list_temporary_2[0])) <= 0:
                a = input(f"{(list_temporary_2)[0]} - {(list_temporary_1)[0]} = ??     ")
                print()
                print()
                print()
                del (list_temporary_1[0:])
                del (list_temporary_2[0:])
                del (list_temporary_3[0:])
                if int(a) - (int(c) - int(b)) == 0:
                    right += 1
                    print(f"현재목숨은{moksum}개 입니다")
                else:
                    moksum -= 1
                    if moksum == 0:
                        break
                    print(f"현재목숨은{moksum}개 입니다")

            elif ((list_temporary_1[0]) - (list_temporary_2[0])) > 0:
                a = input(f"{(list_temporary_1)[0]} - {(list_temporary_2)[0]} = ??     ")
                print()
                print()
                print()
                del (list_temporary_1[0:])
                del (list_temporary_2[0:])
                del (list_temporary_3[0:])
                if int(a) - (int(b) - int(c)) == 0:
                    right += 1
                    print(f"현재목숨은{moksum}개 입니다")
                else:
                    moksum -= 1
                    if moksum == 0:
                        break
                    print(f"현재목숨은{moksum}개 입니다")
        elif (list_temporary_3[0]) == 3: # 3이면 곱셈
            list_temporary_1.append(random.choice(list_1))
            list_temporary_2.append(random.choice(list_1))
            b = 0
            c = 0
            a = 0
            b = (list_temporary_1[0])
            c = (list_temporary_2[0])
            a = input(f"{(list_temporary_1)[0]} * {(list_temporary_2)[0]} = ??     ") # 더하기와 코드는 동일
            print()
            print()
            print()
            del (list_temporary_1[0:])
            del (list_temporary_2[0:])
            del (list_temporary_3[0:])
            if int(a) - (int(b) * int(c)) == 0:
                right += 1
                print(f"현재목숨은{moksum}개 입니다")
            else:
                moksum -= 1
                if moksum == 0:
                        break
                print(f"현재목숨은{moksum}개 입니다")
        elif moksum == 0:
            break
        time.sleep(0.5)        
    step = 0
else :
    pass

print(right,"점 입니다")

전체코드

import random
import time

 # 리스트
list_1 = [1,2,3,4,5,6,7,8,9,10]
list_2 = [1,2,3]
list_3 = [1,2]
list_4 = (range(1, 101))
a = 0
b = 0
c = 0
moksum = 0
list_temporary_1 = []
list_temporary_3 = []
list_temporary_2 = []

 # 정답 임시저장
answer = 0

 # 맞은 문제
right = 0
step = int(input("easy = 1 , normal = 2 , hard = 3"))

if step == 1:
    moksum = 5
    for i in range(1,6):
        b = 0
        c = 0
        a = 0
        list_temporary_1.append(random.choice(list_1))
        list_temporary_2.append(random.choice(list_1))
        b = (list_temporary_1[0])
        c = (list_temporary_2[0])
        a = input(f"{(list_temporary_1)[0]} + {(list_temporary_2)[0]} = ??     ")
        print()
        print()
        print()
        del (list_temporary_1[0:])
        del (list_temporary_2[0:])
        del (list_temporary_3[0:])
        if int(a) - (int(b) + int(c)) == 0:
            right += 1
            print(f"현재목숨은{moksum}개 입니다")
        else:
            moksum -= 1
            if moksum == 0:
                break
            print(f"현재목숨은{moksum}개 입니다")
        if moksum == 0:
            break
        time.sleep(0.5)
    step = 0
    pass


    

elif step == 2:
    moksum = 4
    for i in range(1,11):
        list_temporary_1.append(random.choice(list_1))
        list_temporary_2.append(random.choice(list_1))
        list_temporary_3.append(random.choice(list_3))
        if (list_temporary_3[0]) == 1:
            b = 0
            c = 0
            a = 0
            b = (list_temporary_1[0])
            c = (list_temporary_2[0])
            a = input(f"{(list_temporary_1)[0]} + {(list_temporary_2)[0]} = ??     ")
            print()
            print()
            print()
            del (list_temporary_1[0:])
            del (list_temporary_2[0:])
            del (list_temporary_3[0:])
            if int(a) - (int(b) + int(c)) == 0:
                right += 1
                print(f"현재목숨은{moksum}개 입니다")
            else:
                moksum -= 1
                if moksum == 0:
                    break
                print(f"현재목숨은{moksum}개 입니다")
        elif (list_temporary_3[0]) == 2:
            b = (list_temporary_1[0])
            c = (list_temporary_2[0])
            if ((list_temporary_1[0]) - (list_temporary_2[0])) <= 0:
                a = input(f"{(list_temporary_2)[0]} - {(list_temporary_1)[0]} = ??     ")
                print()
                print()
                print()
                del (list_temporary_1[0:])
                del (list_temporary_2[0:])
                del (list_temporary_3[0:])
                if int(a) - (int(c) - int(b)) == 0:
                    right += 1
                    print(f"현재목숨은{moksum}개 입니다")
                else:
                    moksum -= 1
                    if moksum == 0:
                        break
                    print(f"현재목숨은{moksum}개 입니다")

            elif ((list_temporary_1[0]) - (list_temporary_2[0])) > 0:
                a = input(f"{(list_temporary_1)[0]} - {(list_temporary_2)[0]} = ??     ")
                print()
                print()
                print()
                del (list_temporary_1[0:])
                del (list_temporary_2[0:])
                del (list_temporary_3[0:])
                if int(a) - (int(b) - int(c)) == 0:
                    right += 1
                    print(f"현재목숨은{moksum}개 입니다")
                else:
                    moksum -= 1
                    if moksum == 0:
                        break
                    print(f"현재목숨은{moksum}개 입니다")

        time.sleep(0.5)
    step = 0
    pass





elif step == 3:
    moksum = 3
    for i in range(1,16):
        list_temporary_3.append(random.choice(list_2))
        if (list_temporary_3[0]) == 1:
            list_temporary_1.append(random.choice(list_4))
            list_temporary_2.append(random.choice(list_4))
            b = 0
            c = 0
            a = 0
            b = (list_temporary_1[0])
            c = (list_temporary_2[0])
            a = input(f"{(list_temporary_1)[0]} + {(list_temporary_2)[0]} = ??     ")
            print()
            print()
            print()
            del (list_temporary_1[0:])
            del (list_temporary_2[0:])
            del (list_temporary_3[0:])
            if int(a) - (int(b) + int(c)) == 0:
                right += 1
                print(f"현재목숨은{moksum}개 입니다")
            else:
                moksum -= 1
                if moksum == 0:
                    break
                print(f"현재목숨은{moksum}개 입니다")
        elif (list_temporary_3[0]) == 2:
            list_temporary_1.append(random.choice(list_4))
            list_temporary_2.append(random.choice(list_4))
            b = (list_temporary_1[0])
            c = (list_temporary_2[0])
            if ((list_temporary_1[0]) - (list_temporary_2[0])) <= 0:
                a = input(f"{(list_temporary_2)[0]} - {(list_temporary_1)[0]} = ??     ")
                print()
                print()
                print()
                del (list_temporary_1[0:])
                del (list_temporary_2[0:])
                del (list_temporary_3[0:])
                if int(a) - (int(c) - int(b)) == 0:
                    right += 1
                    print(f"현재목숨은{moksum}개 입니다")
                else:
                    moksum -= 1
                    if moksum == 0:
                        break
                    print(f"현재목숨은{moksum}개 입니다")

            elif ((list_temporary_1[0]) - (list_temporary_2[0])) > 0:
                a = input(f"{(list_temporary_1)[0]} - {(list_temporary_2)[0]} = ??     ")
                print()
                print()
                print()
                del (list_temporary_1[0:])
                del (list_temporary_2[0:])
                del (list_temporary_3[0:])
                if int(a) - (int(b) - int(c)) == 0:
                    right += 1
                    print(f"현재목숨은{moksum}개 입니다")
                else:
                    moksum -= 1
                    if moksum == 0:
                        break
                    print(f"현재목숨은{moksum}개 입니다")
        elif (list_temporary_3[0]) == 3:
            list_temporary_1.append(random.choice(list_1))
            list_temporary_2.append(random.choice(list_1))
            b = 0
            c = 0
            a = 0
            b = (list_temporary_1[0])
            c = (list_temporary_2[0])
            a = input(f"{(list_temporary_1)[0]} * {(list_temporary_2)[0]} = ??     ")
            print()
            print()
            print()
            del (list_temporary_1[0:])
            del (list_temporary_2[0:])
            del (list_temporary_3[0:])
            if int(a) - (int(b) * int(c)) == 0:
                right += 1
                print(f"현재목숨은{moksum}개 입니다")
            else:
                moksum -= 1
                if moksum == 0:
                        break
                print(f"현재목숨은{moksum}개 입니다")
        elif moksum == 0:
            break
        time.sleep(0.5)        
    step = 0
else :
    pass

print(right,"점 입니다")