得到了一段我正在努力解决的代码。我非常接近,但由于某种原因,其他声明在错误的时间打印出来我不确定它是否有错。
try:
my_dict = {'ex01': 65, 'ex02': 'hello', 'ex03': 86, 'ex04': 98}
key_str = input('Enter a key:')
result = my_dict[key_str]
result *= 2
print(result)
except:
print("Key not found")
else:
print("invalid")
finally:
print()
当我输入ex01作为输入时,它打印出130并且当它不应该打印出来时无效。任何想法都错了吗?
答案 0 :(得分:4)
这是要做的事情:
my_dict = {'ex01': 65, 'ex02': 'hello', 'ex03': 86, 'ex04': 98}
key_str = input('Enter a key:')
try:
result = my_dict[key_str]
result *= 2
except KeyError: # the key does not exist
print('Key not found')
except: # something else went wrong
print('invalid')
else: # everything went fine
print(result)
finally:
print('the end') # Will always be executed