Add practice template, fix style

Author: phrdang

2_intermediate/chapter11/practice/cashier_job.py

@@ -0,0 +1,12 @@
+# Cashier Job
+# Write a function called calculate_total
+# that will take the number of pennies, nickels, dimes,
+# quarters, and discount rate (i.e. 15 for 15% discount).
+# Return the total amount of money after discount.
+#
+# Print what is returned by the function after it is run with 97 pennies,
+# 13 nickels, 18 dimes, 54 quarters, and 20% discount.
+# Print what is returned by the function after it is run with 32 pennies,
+# 19 nickels, 22 dimes, 71 quarters, and 51% discount.
+
+# write code here

2_intermediate/chapter11/solutions/cashier_job.py

@@ -1,22 +1,25 @@
-# Write a function that will take the number of pennies, nickels, dimes,
-# quarters, and discount(i.e. 15 for 15% discount). Return the total amount of
-# money after discount.
+# Cashier Job
+# Write a function called calculate_total
+# that will take the number of pennies, nickels, dimes,
+# quarters, and discount rate (i.e. 15 for 15% discount).
+# Return the total amount of money after discount.
 #
 # Print what is returned by the function after it is run with 97 pennies,
 # 13 nickels, 18 dimes, 54 quarters, and 20% discount.
 # Print what is returned by the function after it is run with 32 pennies,
 # 19 nickels, 22 dimes, 71 quarters, and 51% discount.
 
 
-def calc_total(penny, nickel, dime, quarter, discount):
+def calculate_total(penny, nickel, dime, quarter, discount):
     before_discount = (
         0.01 * penny + 0.05 * nickel + 0.1 * dime + 0.25 * quarter
     )
     discount_multiplier = 1 - discount * 0.01
 
+    # Round to 2 decimals since it is money
     return round(before_discount * discount_multiplier, 2)
 
 
-print(calc_total(97, 13, 18, 54, 20))
+print(calculate_total(97, 13, 18, 54, 20))
 
-print(calc_total(32, 19, 22, 71, 51))
+print(calculate_total(32, 19, 22, 71, 51))