为了人工抛出一个异常，可以使用断言assert，如下：
#coding=utf-8
def testAssert(path):
import os
assert isinstance(path,str),'Need string'
if os.path.isdir(path) == True:
print path + ' is a dir!'
return path
else:
return "Not dir!"
if __name__ == '__main__':
print testAssert(2)
测试如下：
D:\work\bjmobile\daily_report>python test.py
Traceback (most recent call last):
File "test.py", line 13, in
print testAssert(2)
File "test.py", line 5, in testAssert
assert isinstance(path,str),'Need string'
AssertionError: Need string
#coding=utf-8
def testAssert(path):
import os
assert isinstance(path,str),'Need string'
if os.path.isdir(path) == True:
print path + ' is a dir!'
return path
else:
return "Not dir!"
if __name__ == '__main__':
print testAssert(2)
测试如下：
D:\work\bjmobile\daily_report>python test.py
Traceback (most recent call last):
File "test.py", line 13, in
print testAssert(2)
File "test.py", line 5, in testAssert
assert isinstance(path,str),'Need string'
AssertionError: Need string
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/10972173/viewspace-2125003/ ，如需转载，请注明出处，否则将追究法律责任。
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