Update Python_Exercises.py

Python_Exercises.py

@@ -7,8 +7,7 @@
 def power(a,b):
 
     # ** What is 7 to the power of 4?**
-
-    return None
+    return a**b
 
 
 
@@ -19,8 +18,7 @@ def split_str(s):
 #     s = "Hi there Sam!"
 #     
 # **into a list. **
-
-    return None
+    return s.split()
 
 
 def format(planet,diameter):
@@ -33,8 +31,8 @@ def format(planet,diameter):
 # ** Use .format() to print the following string: **
 # 
 #     The diameter of Earth is 12742 kilometers.
-
-    return None
+    s="The diameter of {} is {} kilometers.".format(planet,diameter)
+    return s
 
 
 
@@ -44,7 +42,7 @@ def indexing(lst):
 
 #lst = [1,2,[3,4],[5,[100,200,['hello']],23,11],1,7]
 
-    return None
+    return lst[3][1][2][0]
 
 
 def dictionary(d):
@@ -54,16 +52,16 @@ def dictionary(d):
 # d = {'k1':[1,2,3,{'tricky':['oh','man','inception',{'target':[1,2,3,'hello']}]}]}
 
 
-    return None
+    return d['k1'][3]['tricky'][3]['target'][3]
 
 
 def subjective():
 
 # ** What is the main difference between a tuple and a list? **
 # Tuple is _______
+    s="immutable"
 
-    return None
-
+    return s
 
 
 
@@ -75,21 +73,25 @@ def domainGet(email):
 #     
 # **So for example, passing "[email protected]" would return: domain.com**
 
-    return None
+    return email.split('@')[-1]
 
 
 def findDog(st):
 
 # ** Create a basic function that returns True if the word 'dog' is contained in the input string. Don't worry about edge cases like a punctuation being attached to the word dog, but do account for capitalization. **
 
-    return None
+    return 'dog' in st.lower().split()
 
 
 def countDog(st):
 
 # ** Create a function that counts the number of times the word "dog" occurs in a string. Again ignore edge cases. **
-
-    return None
+    count = 0
+    for word in st.lower().split():
+        if word == 'dog':
+            count += 1
+    return count
+
 
 
 
@@ -102,8 +104,9 @@ def lambdafunc(seq):
 # **should be filtered down to:**
 # 
 #     ['soup','salad']
-
-    return None
+
+    l=list(filter(lambda word: word[0]=='s',seq))
+    return l
 
 
 def caught_speeding(speed, is_birthday):
@@ -115,7 +118,17 @@ def caught_speeding(speed, is_birthday):
 #   and 80 inclusive, the result is "Small Ticket". If speed is 81 or more, the result is "Big    Ticket". Unless it is your birthday (encoded as a boolean value in the parameters of the function) -- on your birthday, your speed can be 5 higher in all 
 #   cases. **
 
-    return None
+    if is_birthday:
+        speeding = speed - 5
+    else:
+        speeding = speed
+
+    if speeding > 80:
+        return 'Big Ticket'
+    elif speeding > 60:
+        return 'Small Ticket'
+    else:
+        return 'No Ticket'
 
 
 ## Numpy Exercises
@@ -128,8 +141,8 @@ def create_arr_of_fives():
   #### Create an array of 10 fives
   #### Convert your output into list 
   #### e.g return list(arr) 
-
-  return None
+  arr=np.ones(10)*5
+  return list(arr)
 
 
 
@@ -138,8 +151,10 @@ def even_num():
   ### Create an array of all the even integers from 10 to 50
   ### Convert your output into list 
   ### e.g return list(arr) 
-
-  return None
+  x = np.arange(10,51)
+  y = (x%2 == 0)
+  arr = x[y]
+  return list(arr)
 
 
 
@@ -148,8 +163,8 @@ def create_matrix():
   ### Create a 3x3 matrix with values ranging from 0 to 8
   ### Convert your output into list 
   ### e.g return (arr).tolist()
-
-  return None
+  arr = np.arange(0,9).reshape((3,3))
+  return arr.tolist()
 
 
 
@@ -159,7 +174,7 @@ def linear_space():
   ### Convert your output into list 
   ### e.g return list(arr) 
 
-  return None
+  return list(np.linspace(0,1,20))
 
 
 
@@ -169,7 +184,8 @@ def decimal_mat():
   ### Convert your output into list 
   ### e.g return (arr).tolist()
 
-  return None
+  arr = np.arange(1,101).reshape(10,10)/100
+  return arr.tolist()
 
 
 
@@ -189,8 +205,8 @@ def slices_1():
   # array([[12, 13, 14, 15],
   #      [17, 18, 19, 20],
   #      [22, 23, 24, 25]])
-
-  return None
+   
+  return arr[2:,1:].tolist()
 
 
 
@@ -211,7 +227,7 @@ def slices_2():
   #      [ 7],
   #      [12]])
 
-  return None 
+  return arr[0:3,1:2].tolist() 
 
 
 
@@ -231,7 +247,7 @@ def slices_3():
   # array([[16, 17, 18, 19, 20],
   #      [21, 22, 23, 24, 25]])
 
-  return None 
+  return arr[3:].tolist() 
 
 
 # Great job!