diff --git a/Python/CollectionsOrderedDict.py b/Python/CollectionsOrderedDict.py
new file mode 100644
index 0000000..80e56a6
--- /dev/null
+++ b/Python/CollectionsOrderedDict.py
@@ -0,0 +1,18 @@
+/*
+Solution For: collections.OrderedDict
+https://www.hackerrank.com/challenges/py-collections-ordereddict/problem
+*/
+from collections import OrderedDict
+n = int(input())
+ordered_dictionary = OrderedDict({})
+for i in range(n):
+    x = input().split(' ')
+    y = int(x[-1])
+    x.pop()
+    x1 = ' '.join(x)
+    if x1 in ordered_dictionary:
+        ordered_dictionary[x1] += y
+    else:
+        ordered_dictionary[x1] = y
+for i,j in ordered_dictionary.items():
+    print(i,j)
diff --git a/Python/DesignerDoorMat.py b/Python/DesignerDoorMat.py
new file mode 100644
index 0000000..fee713f
--- /dev/null
+++ b/Python/DesignerDoorMat.py
@@ -0,0 +1,14 @@
+/*
+Solution For: Desginer Door Mat
+https://www.hackerrank.com/challenges/designer-door-mat/problem
+*/
+
+n,m = map(int,input().split())
+#Abovepart
+for i in range(1,((n-1)//2)+1):
+    print(((2*i-1)*".|.").center(m,'-'))
+#Middlepart
+print("WELCOME".center(m,'-'))
+#belowpart
+for i in range(((n-1)//2),0,-1):
+    print(((2*i-1)*".|.").center(m,'-'))
diff --git a/Python/ItertoolsCombination.py b/Python/ItertoolsCombination.py
new file mode 100644
index 0000000..d92e433
--- /dev/null
+++ b/Python/ItertoolsCombination.py
@@ -0,0 +1,12 @@
+/*
+Solution for Itertools.combination()
+https://www.hackerrank.com/challenges/itertools-combinations/problem
+ */
+from itertools import combinations
+x,y = input().split()
+x = list(x)
+x.sort()
+for i in range(1,int(y)+1):
+    z = list(combinations(x,i))
+    for j in z:
+        print(''.join(j))
diff --git a/Python/SetOperations.py b/Python/SetOperations.py
new file mode 100644
index 0000000..23f2e0d
--- /dev/null
+++ b/Python/SetOperations.py
@@ -0,0 +1,22 @@
+/*
+Solution For: Set .discard(), .remove() & .pop()
+https://www.hackerrank.com/challenges/py-set-discard-remove-pop/problem
+*/
+
+n = int(input())
+s = set(map(int, input().split()))
+noc = int(input())
+commands = {
+    "pop" : lambda a:a.pop(),
+    "remove" : lambda a,b:a.remove(b),
+    "discard" : lambda a,b : a.discard(b)
+}
+for i in range(noc):
+    z = input()
+    z1 = z.split()
+    command = z1[0]
+    try:
+        commands[command](s,int(z1[1]))
+    except IndexError:
+        commands[command](s)
+print(sum(s))