Update Day_14.md

Author: darkprinx

Status/Day_14.md

@@ -1 +1,116 @@
 
+# Question 51
+
+### **Question**
+
+> ***Write a function to compute 5/0 and use try/except to catch the exceptions.***
+
+----------------------
+### Hints 
+> ***Use try/except to catch exceptions.***
+
+----------------------
+
+**Main author's Solution: Python 2**
+```python
+def throws():
+ return 5/0
+
+try:
+ throws()
+except ZeroDivisionError:
+ print "division by zero!"
+except Exception, err:
+ print 'Caught an exception'
+finally:
+ print 'In finally block for cleanup'
+```
+----------------
+**My Solution: Python 3**
+```python
+#to be written
+
+```
+---------------------
+
+
+# Question 52
+
+### **Question**
+
+> ***Define a custom exception class which takes a string message as attribute.***
+
+----------------------
+### Hints 
+> ***To define a custom exception, we need to define a class inherited from Exception.***
+
+----------------------
+
+**Main author's Solution: Python 2**
+```python
+class MyError(Exception):
+ """My own exception class
+
+ Attributes:
+ msg -- explanation of the error
+ """
+
+ def __init__(self, msg):
+ self.msg = msg
+
+error = MyError("something wrong")
+
+```
+----------------
+**My Solution: Python 3**
+```python
+#to be written
+
+```
+---------------------
+
+
+
+
+# Question 53
+
+### **Question**
+
+> ***Assuming that we have some email addresses in the "username@companyname.com" format, please write program to print the user name of a given email address. Both user names and company names are composed of letters only.***
+
+> ***Example:
+If the following email address is given as input to the 
+program:***
+
+
+```
+john@google.com
+```
+> ***Then, the output of the program should be:***
+
+```
+john
+```
+> ***In case of input data being supplied to the question, it should be assumed to be a console input.***
+
+----------------------
+### Hints 
+> ***Use \w to match letters.***
+
+----------------------
+
+**Main author's Solution: Python 2**
+```python
+import re
+emailAddress = raw_input()
+pat2 = "(\w+)@((\w+\.)+(com))"
+r2 = re.match(pat2,emailAddress)
+print r2.group(1)
+```
+----------------
+**My Solution: Python 3**
+```python
+#to be written
+
+```
+---------------------