Python嵌套While循环语法错误：二级循环引发程序报错

你遇到的语法错误其实很直白——在Strong's二级循环的input()调用里漏写了闭合的右括号！这直接导致Python解析器无法正确识别后续的if语句，抛出了SyntaxError。除此之外，还有一个小细节会影响你“退出二级循环返回主循环”的需求，我一起帮你修正。

错误根源拆解 #

看你代码里的这一行：

strongs_inp = input("Get (D)efinition by Strong's Number, (E)xit: "

末尾缺少了一个)，Python没法正确解析这个输入语句，自然会在紧接着的if行报错。

另外，strongs_conc变量的初始化位置不太对：你把它放在了主循环外面，第一次退出Strong's二级循环后，strongs_conc会被设为False，之后再进入Strong's菜单时，二级循环根本不会启动。得把它移到进入Strong's菜单的代码块内部，每次进入时重置为True。

修复后的完整代码 #

kjv = open('my file path /bible.txt','r').read()
#split each verse into two item list [verse reference, scripture words]:
scriptures_lst = [verse.split('\t') for verse in kjv.split('\n') if verse.split('\t')]
#List of scripture references:
references = [i[0] for i in scriptures_lst]
#Word without scripture references:
word = [i[1] for i in scriptures_lst]
#Books of the bible
books = [i.rstrip('0123456789: ') for i in references]
#To remove duplicates from list by turning into a set, and then back into a list
bible_books = list(set(books))
#Alphabetize the order of the books:
alph_books = sorted(bible_books)

#Search for verse function
def scripture_search():
    inp = input('verse? ')
    found = next(i for i in scriptures_lst if inp in i)
    return found

continue_inquiry = True

while continue_inquiry == True:
    #USER INPUT
    print("(S)earch, (N)ote, (B)ooks, (K)jv, Strong's \ Exhaustive (C)oncordance, (E)xit")
    request = input('What would you like to do? ')

    if request.upper() == 'SEARCH' or request.upper() == 'S':
        search = scripture_search()
        print(' - '.join(search))
        #WRITE / APPEND VERSES FROM SEARCH TO A TEXT FILE
        #open the file in a+ - append plus mode
        #opens the file for appending to the end of the file (no overwrite) plus read mode
        versesearch_file = open('versesearch_file.txt', 'a+')
        versesearch_file.write(' - '.join(search) + "\n\n")
        versesearch_file.close()

    elif request.upper() == 'NOTE' or request.upper() == 'N':
        note = input('What note would you like to add? ')
        versesearch_file = open('versesearch_file.txt', 'a+')
        versesearch_file.write(note + "\n\n")
        versesearch_file.close()

    #print books of the bible list
    elif request.upper() == 'BOOKS' or request.upper() == 'B':
        print(alph_books)

    #print entire kjv
    elif request.upper() == 'KJV' or request.upper() == 'K':
        print(kjv)

    #start a new while loop for strong's exhaustive concordance
    elif request.upper() == "STRONG'S EXHAUSTIVE CONCORDANCE" or request.upper() == "C":
        # 每次进入Strong's菜单时重置循环标志
        strongs_conc = True
        while strongs_conc == True:
            print("What would you like to do with Strong's?")
            # 补上缺失的右括号
            strongs_inp = input("Get (D)efinition by Strong's Number, (E)xit: ")
            if strongs_inp.upper() == 'D':
                print('you selected D')
            elif strongs_inp.upper() == 'EXIT' or strongs_inp.upper() == 'E':
                strongs_conc = False  # 退出二级循环，回到主循环

    #exit from program
    elif request.upper() == 'EXIT' or request.upper() == 'E':
        continue_inquiry = False

关于返回主循环的说明 #

修复后，当你在Strong's二级循环中输入E或EXIT时，strongs_conc会被设为False，二级循环终止，程序会自动回到主循环的开头，等待你下一次的操作选择，完全符合你的需求。

内容的提问来源于stack exchange，提问作者Winget