PR by varunpanicker

practice.py

@@ -0,0 +1,66 @@
+a= "Hello, this is the test exercise"
+print a
+
+#Comparing memory alloation blocks of strings in python
+s1= "qwerty"
+s2= "qwerty"
+def printstring():
+    print "string 1 is: ", s1
+    print "string 2 is: ", s2
+printstring()
+
+def printid():
+    print "id of string 1 is: ", id(s1)
+    print "id of string 2 is: ", id(s2)
+    global ids2
+    ids1= id(s1)
+    ids2= id(s2)
+    print "this is calling the local variable ids1 for id of s1", ids1
+printid()
+
+print "this is calling the global variable ids2 for id of s2", ids2
+
+print "if id of s1 and s2 are the same, memory alloc is a match"
+
+print "type() function is used to view the type of the variable defined"
+n1= 12345
+print "value of n1 is", n1
+print "type of the n1 variable is", type(n1)
+
+def lists():
+   print "lists are a data structure in python"
+   print "lists in python are heterogeneous, they house various datatypes"
+   a= [1,2,3,"aaaaa"]
+   print a
+   print (a, "is of type", type(a))
+lists()
+
+def dictionary():
+   print "dictionaries are a data structure in python"
+   print "dictionaries are represented as 'dict' "
+   a= {"big data" : "data"}
+   print a
+   print (a, "is of type", type(a))
+dictionary()
+
+def append():
+    print "demonstrating append for lists"
+    l=[1,2,3,4]
+    print l
+    l.append(5)
+    print l
+append()
+
+def importing():
+    print "to import math library, type 'import math'"
+    import math
+    print "type of math library is", type(math)
+    print (math.sqrt(16))
+importing()
+
+print """use tripple double quotes to write multiline strings,
+Just like this!"""
+
+string= "test case for strings"
+print "characters form index 1 to -5: ", (string[1:-5])
+print (len(string))