在这种情况下我应该如何插入 try-except
How should I insert try-except in this scenario
Task1
Write a script that reads a string from STDIN and raise ValueError
exception if the string has more than 10 characters or else prints the
read string.
我是这样写代码的
a = input("Enter a string")
if(len(a) > 10):
raise ValueError
else:
print(a)
Task2
Use try ... except
clauses. Print the error message inside except
block.
我现在对如何在这里使用 try-except
感到困惑,因为要在 except
块中打印任何消息,程序必须在 try
块处失败。
我的输入将是 PythonIsAmazing
您可以将整个内容包装在 try ... except
中,如下所示:
a = input("Enter a string: ")
try:
if(len(a) > 10):
raise ValueError
print(a)
except ValueError:
print("String was longer than 10 characters")
或者,如果您有很多不同的 ValueErrors
可能会被引发,您可以给每个单独的错误消息:
a = input("Enter a string: ")
try:
if(len(a) > 10):
raise ValueError("String was longer than 10 characters")
print(a)
except ValueError as e:
print(e)
例如:
Enter a string: test
test
Enter a string: PythonIsAmazing
String was longer than 10 characters
Task1
Write a script that reads a string from STDIN and raise ValueError exception if the string has more than 10 characters or else prints the read string.
我是这样写代码的
a = input("Enter a string")
if(len(a) > 10):
raise ValueError
else:
print(a)
Task2
Use
try ... except
clauses. Print the error message inside except block.
我现在对如何在这里使用 try-except
感到困惑,因为要在 except
块中打印任何消息,程序必须在 try
块处失败。
我的输入将是 PythonIsAmazing
您可以将整个内容包装在 try ... except
中,如下所示:
a = input("Enter a string: ")
try:
if(len(a) > 10):
raise ValueError
print(a)
except ValueError:
print("String was longer than 10 characters")
或者,如果您有很多不同的 ValueErrors
可能会被引发,您可以给每个单独的错误消息:
a = input("Enter a string: ")
try:
if(len(a) > 10):
raise ValueError("String was longer than 10 characters")
print(a)
except ValueError as e:
print(e)
例如:
Enter a string: test
test
Enter a string: PythonIsAmazing
String was longer than 10 characters