diff --git a/python_exercises.py b/python_exercises.py
new file mode 100644
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+++ b/python_exercises.py
@@ -0,0 +1,99 @@
+import math
+import numpy as np
+################# question 1 ###################
+def q1_div(x,y):
+    l=[]
+    for i in range(x,y):
+        if (i%7==0) and (i%5!=0):
+            l.append(str(i))
+    l_cont = ','.join(l)
+    print(type(l_cont),(l_cont))
+
+################# question 2 ###################
+def q2_factorial(x):
+    for i in range(x-1,1,-1):
+        x=x*i
+    print(x)
+def q2_factorial_s(x):
+    if x==0:
+        return 1
+    else:
+        return x*q2_factorial_s(x-1)
+
+################# question 3 ###################
+def q3_sqr(x):
+    d = {}
+    for i in range(1,x+1):
+        d[i]=i*i
+    return(d)
+
+################# question 4 ###################
+def q4_listtuple_s():
+    values=input()
+    l=values.split(",")
+    t=tuple(l)
+    print(l)
+    print(t)
+
+################# question 5 ###################
+class q5_string:
+    def __init__(self):
+        self.get_string=""
+    def getString(self):
+        self.get_string=input()
+    def printString(self):
+        print(self.get_string.upper())
+
+#test5 = q5_string()
+#test5.getString()
+#test5.printString()
+
+################# question 6 ###################
+def q6_sqr_func(c=50,h=30):
+    value =[]
+    items=[x for x in input().split(',')]
+    for d in items:
+        value.append(str(int(round(math.sqrt(2*c*float(d)/h)))))
+    print(','.join(value))
+
+################# question 7 ###################
+# defined using numpy, return numpy.ndarray
+def q7_array_build(x,y):
+    a = np.zeros(shape=(x,y))
+    for i in range(0,x):
+        for j in range(0,y):
+            a[i][j] = i*j
+    print(a)
+    return(a)
+
+# defined using list of list, return list
+def q7_array_build_s():
+    input_str = input()
+    dimensions=[int(x) for x in input_str.split(',')]
+    rowNum=dimensions[0]
+    colNum=dimensions[1]
+    multilist = [[0 for col in range(colNum)] for row in range(rowNum)]
+
+    for row in range(rowNum):
+        for col in range(colNum):
+            multilist[row][col]= row*col
+    print(multilist)
+    return(multilist)
+
+
+ ################# question 8 ###################   
+def q8_sort_words():
+    x_string = input()
+    x_list = [x for x in x_string.split(',')]
+    x_list.sort()
+    print(','.join(x_list))
+ 
+ ################# question 9 ################### 
+def q9_capitilize_string():
+    x_string = input()
+    print(x_string.upper())
+
+
+
+if __name__ == "__main__":
+    q9_capitilize_string()
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