Python 中的try catch语法示例

下面就是在Python中使用try catch的示例，一个标准的语法

#  Python try and except method
try:
   number = 24/0

# execute except block if zero division occur
except ZeroDivisionError:
   print("Cannot divide by zero")

# Always run finally block
finally:
   print("This block successfully was executed!")

输出：

Cannot divide by zero
This block successfully was executed!

当然你也可以同时捕获多种类型的Excption

#  Python try and except method
try:
   import math
   number = 24/6
   print(number)

# run except block if module error occur
except ModuleNotFoundError:
   print("No module exist")

# run except blcok if zero division occurs
except ZeroDivisionError:
   print("Cannot divide by zero!")

# Always run finally block
finally:
   print("Good job!")

输出：

4.0
Good job!

当然我们还可以定义错误预言如下：

try:
   denominator = 0
   assert denominator != 0, "Cannot divide by zero"
   print(24/ denominator)
 
# executes the assertionError if assert condition is false
except AssertionError as msg:
   print(msg)

输出：

Cannot divide by zero

如果你还是在使用python2刚上面这种方式暂时还不被 支持。

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