Python-如何在嵌套的while循环中深入循环，以不返回到整个循环的开始，而是使其返回自己的while循环

Question

下面是我的代码。 当用户输入字符串而不是整数时，我曾尝试捕获错误。 它的工作，但对于if循环。 我要这样做，例如，当有人在第一个if语句循环中输入28时，它不会返回到开头，而只是问相同的问题。 因此，对于年份，假设我输入10，它将再次要求年份，而不会将用户送回开始或终止程序。 我正在创建一个项目，这是我项目的开始。

另外，当我尝试在def下运行代码，而没有def函数时，直接运行它，这使我无法从str转换为int错误，这意味着无法在title_year列和变量Year之间进行比较，但是当我使用df.dtype title_year列是int32，而我的year变量也是int，所以为什么不能将它们两者都进行比较？

while x==1:
while True:
    try:
        choice = input("Welcome to movie recommender v1, please choose your genre first!\n\n1 for Action\n2 for Adventure\n3 for Animation\n4 for Biography\n5 for Comedy\n6 for Crime\n7 for Documentary\n8 for Drama\n9 for Family\n10 for Fantasy\n11 for Film-Noir\n12 for Game-Show\n13 for History\n14 for Horror\n15 for Music\n16 for Musical\n17 for Mystery\n18 for News\n19 for Reality-TV\n20 for Romance\n21 for Sci-Fi\n22 for Sport\n23 for Talk-Show\n24 for Thriller\n25 for War\n26 for Western\n\nEnter your choice:")
        choice=float(choice)
        choice=round(choice)
        choice=int(choice)
    except ValueError:
        print("\n------Not a number, enter a proper value------\n")
        continue
    else:
        break
if 0<=choice<=26:
    genre=allgenres[choice-1]
    while True:
        try:
            score = input("What is the minimum imdb score you are looking for?\nPlease enter a number between 0 and 10:")
            score=float(score)
            score=round(score)
        except ValueError:
            print("\n------Not a number, enter a proper value------\n")
            continue
        else:
            break
    if 0<=score<=10:
        while True:
            try:
                year = input("Please enter the minimum production year limit:")
                year=float(year)
                year=round(year)
            except ValueError & (1990<=year<=2019):
                print("\n------Not a number, enter a proper value------\n")
                continue
            else:
                break
        if 1800<=year<=2100:
            def recommend_me_movie(genre,score,year,):
                genre=str(genre)
                score=float(score)
                print(df.loc[(df['imdb_score']>=score)&(df['genres'].str.contains(genre, flags=re.I, regex=True))&(df['title_year'>=year])])

            x=0
            break
        else:
            print("Error. Bad production year. Try from the beginning.")
            x=0
    else:
        print("Error. Bad imdb score. Try from the beginning.")
        x=0
else:
    print("Error. Bad choice. Try from the beginning.")
    x=0