computer scientist book 2nd chapter exaples

Python/strings/copystr.py

@@ -8,3 +8,12 @@ print(id(copiedstr))
 
 
 #DIFF BETWEEN COPY AND CLONE
+
+import copy
+
+
+a = 'level'
+b = copy.copy(a)
+   
+print(id(a))
+print(id(b))

Python/trail.py

+
+#assign each word of the following sentence to a variable and print the statement using the variables and print function 'All work and no play makes Jack a dull boy.'
+
+a = ' All'
+b = ' work'
+c = ' and'
+d = ' no'
+e = ' play'
+f = ' makes'
+g = ' Jack'
+h = ' a'
+i = ' dull'
+j = ' boy.' 
+
+print(a+b+c+d+e+g+h+j)
+
+#use paranthesis between operators
+print(6*(1-2))
+
+#bruce + 4 throws an error , name error as bruce is not defined
+#asaigning bruce a value such that the result fot the above expr is 10
+bruce = 6
+print(bruce+4)
+
+#Write a Python program that assigns the principal amount of $10000 to variable P, assign to n the value 12, and assign to r the interest rate of 8%. Then have the program prompt the user for the number of years t that the money will be compounded for. Calculate and print the final amount after t years.
+
+p = 10000
+n = 12
+r = 0.08
+t_str = input("t, years")
+t = int(t_str)   #or int(input('enter num'))
+
+
+final_amount = p * ((1 + r / n) ** (n * t))
+
+print(final_amount)
+
+
+time = 2 
+extra = 51
+print(time+extra)
+
+
+
+7. You look at the clock and it is exactly 2pm. You set an alarm to go off in 51 hours. At
+what time does the alarm go off? (Hint: you could count on your fingers, but this is not
+what we’re after. If you are tempted to count on your fingers, change the 51 to 5100.)
+8. Write a Python program to solve the general version of the above problem. Ask the user
+for the time now (in hours), and ask for the number of hours to wait. Your program
+should output what the time will be on the clock when the alarm goes off.
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