Question

我只会发布问题所在的部分，程序没有错误（除raw_input问题外，所有代码都有效）

我使用search_function(1)等进行了测试，但它确实有效。

但如果我在循环时执行此操作，则不会打印任何内容。示例输出：

输入一个数字来打印特定的表格，或停止退出：2输入一个号码打印特定表，或停止退出： 2输入要打印的数字表，或停止退出：1输入一个打印特定表格的数字，或STOP 退出：输入要打印的数字特定表，或停止退出：1 输入一个数字来打印特定的表格，或停止退出：输入一个数字打印特定表，或停止退出： STOP

def search_function(x):
    if x == 1:
        for student in students:
            print "%-17s|%-10s|%-6s|%3s" % student.print_information()
        print '\n'

    if x == 2:
        print "%-17s|%-10s|%s" %(header[0],header[1],header[4])
        print "-" * 45
        for student in students:
            print "%-17s|%-10s|%s" %student.print_first()
        print '\n'
        print "Simple Analysis on favorite sports: "
        # Printing all sports that are specified by students
        for s in set(Student.sports): # class attribute
            print s, Student.sports.count(s), round(((float(Student.sports.count(s)) / num_students) *100),1)

        # Printing sports that are not picked 
        allsports = ['Basketball','Football','Other','Baseball','Handball','Soccer','Volleyball','I do not like sport']
        for s in set(allsports) - set(Student.sports):
            print s, 0, '0%'
        choice_list = Student.sports
        for choice in choice_list:
            choice_dict[choice] = choice_dict.get(choice, 0) + 1
        print max(choice_dict)
        print min(choice_dict)

    elif x == 3:
        print "%-17|%-10s|%-16s|%s" %(header[0],header[1],header[5],header[6])
        print "-" * 45
        for student in students:
            print "%-17s|%-10s|%-16s|%s" % student.print_second()
        print '\n'

    elif x == 4:
        print "%-17s|%-10s|%s" %(header[0],header[1],header[7])
        print "-" * 45
        for student in students:
            print "%-17s|%-10s|%s" %student.print_third()
        print '\n'

    elif x == 5:
        print "%-17s|%-10s|%-15s|%s" %(header[0],header[1],header[8],header[9])
        print "-" * 45
        for student in students:
            print "%-17s|%-10s|%-16s|%s" % student.print_fourth()
        print '\n'

x = raw_input("Enter a number to print specific table, or STOP to quit: ")
while x != 'STOP':
    search_function(x)
    x = raw_input("Enter a number to print specific table, or STOP to quit: ")

Answer 1

raw_input()返回字符串，而您的代码需要整数。使用search_function(int(x))或更改条件以与字符串进行比较。

Answer 2

首先测试x == 'STOP'，如果为True则测试break，否则转换为int并调用search_function：

while True:
    x = raw_input("Enter a number to print specific table, or STOP to quit: ")
    if x == 'STOP':
        break
    search_function(int(x))

python raw_input def输入问题

2 个答案: