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coder-pig · coder-pig · commit 9ed0d448985e · 2018-06-20T21:45:26.000+08:00
diff --git a/Chapter 7/7_1_1.py b/Chapter 7/7_1_1.py
@@ -0,0 +1,5 @@
+# 1.最简单的，try捕获了任何异常，直接丢给except后的代码块处理：
+try:
+    result = 1 / 0
+except:
+    print("捕获到异常了!")
diff --git a/Chapter 7/7_1_10.py b/Chapter 7/7_1_10.py
@@ -0,0 +1,6 @@
+"""
+assert 断言使用示例
+"""
+a, b = 1, 2
+assert a > b
+assert (a > b), ("{a} 并不比 {b} 大'".format(a = a, b = b))
diff --git a/Chapter 7/7_1_2.py b/Chapter 7/7_1_2.py
@@ -0,0 +1,5 @@
+# 2.捕获特定类型：
+try:
+    result = 1 / 0
+except ZeroDivisionError:
+    print("捕获到除数为零的错误")
diff --git a/Chapter 7/7_1_3.py b/Chapter 7/7_1_3.py
@@ -0,0 +1,8 @@
+# 3.针对不同的异常设置多个except
+try:
+    sum = 1 + '2'
+    result = 1 / 0
+except TypeError as reason:
+    print("类型出错：" + str(reason))
+except ZeroDivisionError as reason:
+    print("除数为0：" + str(reason))
diff --git a/Chapter 7/7_1_4.py b/Chapter 7/7_1_4.py
@@ -0,0 +1,6 @@
+# 4.对多个异常统一处理
+try:
+    result = 1 / 0
+    sum = 1 + '2'
+except (TypeError, ZeroDivisionError) as reason:
+    print(str(reason))
diff --git a/Chapter 7/7_1_5.py b/Chapter 7/7_1_5.py
@@ -0,0 +1,7 @@
+# 5.当没有检测到异常时才执行的代码块，可以用else
+try:
+    result = 4 / 2
+except ZeroDivisionError as reason:
+    print(str(reason))
+else:
+    print("没有发生异常，输出结果：%d" % result)
diff --git a/Chapter 7/7_1_6.py b/Chapter 7/7_1_6.py
@@ -0,0 +1,10 @@
+# 6.无论是否发生异常都会执行的一段代码块，比如io流关闭，
+# 可以使用finally子句，如果发生异常先走except子句，后走finally子句。
+try:
+    result = 4 / 2
+except ZeroDivisionError as reason:
+    print(str(reason))
+else:
+    print("没有发生异常，输出结果：%d" % result)
+finally:
+    print("无论是否发生异常都会执行～")
diff --git a/Chapter 7/7_1_7.py b/Chapter 7/7_1_7.py
@@ -0,0 +1,12 @@
+"""
+raise显示抛出一个异常示例
+"""
+import re
+
+# 注：这段正则你只需要知道是用来匹配电话号码的，正则在爬虫那一部分会详细讲解
+phone_compile =re.compile(r'^(0|86|17951)?(13[0-9]|14[579]|15[0-35-9]|17[01678]|18[0-9])[0-9]{8}$')
+number = input("请输入一串手机号码：")
+if phone_compile.match(number) is not None:
+    print("您输入的手机号码是：%s" % number)
+else:
+    raise ValueError
diff --git a/Chapter 7/7_1_8.py b/Chapter 7/7_1_8.py
@@ -0,0 +1,19 @@
+"""
+自定义电话号码异常示例
+"""
+import re
+
+# 自定义异常
+class PhoneNumberException(Exception):
+    def __init__(self, message):
+        Exception.__init__(self)
+        self.message = message
+
+
+if __name__ == '__main__':
+    phone_compile = re.compile(r'^(0|86|17951)?(13[0-9]|14[579]|15[0-35-9]|17[01678]|18[0-9])[0-9]{8}$')
+    number = input("请输入一串手机号码：")
+    if phone_compile.match(number) is not None:
+        print("您输入的手机号码是：%s" % number)
+    else:
+        raise PhoneNumberException("非法的手机号码！")
diff --git a/Chapter 7/7_1_9.py b/Chapter 7/7_1_9.py
@@ -0,0 +1,14 @@
+"""
+sys.exc_info函数获得异常信息示例
+"""
+
+import sys
+
+try:
+    result = 1 / 0
+except:
+    tuple_exception = sys.exc_info()
+
+# 输出结果依次是：异常类，类示例，跟踪记录对象
+for i in tuple_exception:
+    print(i)
