Sequence Types in Python

farhanjaved47 · farhanjaved47 · commit 0672bb6e9961 · 2019-11-26T14:50:41.000+05:00
diff --git a/SequenceTypes.py b/SequenceTypes.py
@@ -0,0 +1,44 @@
+def main():
+    myList = [1, 2, 3, 4, 5]  # this is a list. Initialized by square brackets []
+    myList[4] = 7  # list are mutable. This means that you can change their content after initialization.
+
+    for i in myList:
+        print("Value in list : " + str(i))
+
+    myTuple = (1, 2, 3, 4, 5)  # this is a tuple. Initialized by round brackets ( )
+
+    for i in myTuple:
+        print("Value in tuple: " + str(i))
+
+    # myTuple[4] = 8  # Tuples are immutable. Running this command will throw an error.
+
+    #  Tuples preferred unless you know for sure that you have to change the values.
+
+    oneArgRange = range(5)  # this call only gives the start parameter to range
+    for i in oneArgRange:
+        print("value in one argument range : " + str(i))
+
+    twoArgRange = range(5, 10)  # this call gives the start and end parameter to range
+    for i in twoArgRange:
+        print("value in two argument range : " + str(i))
+
+    fullArgRange = range(5, 50, 5)  # this call gives start, end and the step parameter
+    for i in fullArgRange:
+        print("value in complete argument range : " + str(i))
+
+    #  end parameter values are non inclusive in range.
+    #  range is also immutable
+    listFromRange = list(range(1, 100, 10))  # mutable lists can be made from immutable range
+    listFromRange[2] = 0
+    for i in listFromRange:
+        print("Value in List made from range : " + str(i))
+
+    #  Dictionaries are a structure of key value pairs and are mutable
+
+    myDict = {'keyOne': 1, 'keyTwo': 2, 'keyThree': 3, 'keyFour': 4, 'keyFive': 5}
+
+    myDict['keyThree'] = 33
+    for key, value in myDict.items() :
+        print("Printing dictionary key value pairs : " + key + " " + str(value))
+
+main()
