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Author: oshanto-ctrl

twelveth_class/errors_handlng_method.py

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+'''
+Error Handling Methods.
+1. try
+2. except
+3. else
+4. finally
+5. raise
+'''
+
+### Type of errors
+
+## 1. Syntax Error
+# print("Hikaru Nakamura)
+      
+## 2. NameError
+# print(a)
+
+## 3. TypeError
+# print("Hikka" - 3)
+
+## 4. IndentationError
+# if 1 < 2:
+# print("HHH")
+
+## 5. keyError
+# d = {1:"a", 2:"b", 3:"c"}
+# print(d[3])
+
+## 6. zeroDivisionError
+# print(400/0)
+try:
+    x = 10/0
+    print(x)
+except Exception as e:
+    print(type(e))
+    print(e) # e is class 'ZeroDivisionError'
+    print(type(str(e)))
+    print(str(e)) # e is string 'division by zero'
+
+
+# raise example
+# Exception inside message will be shown to user.
+def test(a):
+    if a < 0:
+        raise Exception("Number should be positive.")
+    else:
+        a += 10.
+        print(a)
+# call test
+test(-5)
+# test(-10)