After lecture 3

Author: mcwebtree

Assessment/Wk3/average.py

@@ -0,0 +1,10 @@
+# basic average calculator
+
+num1 = int(input("Enter first integer: "))
+num2 = int(input("Enter second integer: "))
+num3 = int(input("Enter third integer: "))
+num4 = int(input("Enter fourth integer: "))
+
+avg= ( num1 + num2 + num3 + num4 ) / 4
+print ( "For values: ", num1 , num2 , num3 , num4 )
+print ("Average is: " + str(avg))

Assessment/Wk3/average_test.docx

@@ -0,0 +1,30 @@
+# Bandwidth Headache
+
+
+# inits
+
+m_in_b = int(1000000)
+app_a_bw = int(200000)
+app_b_bw = int(100000)
+app_new_bw = int(350000)
+
+max_bw_M = int(1000 )
+max_bw_b = max_bw_M * m_in_b 
+
+conc_users = int(200)
+
+# calcs
+current_usage = conc_users * ( app_a_bw + app_b_bw )
+free_capacity = max_bw_b - current_usage
+new_app_demands = conc_users * app_new_bw
+spare_after = max_bw_b - current_usage - new_app_demands 
+
+# outputs
+print ( "Bandwidth guesstimator 1000 ")
+print ( "-" * 30 )
+
+print ( f'Maximum network bandwidth is { max_bw_b } bps')
+print ( f'Current network usage is { current_usage } bps' )
+print ( f'Current availability is { free_capacity } bps' )
+print ( f'New application requirements are { new_app_demands } bps')
+print ( f'Spare Bandwidth available is new app deployed is { spare_after / m_in_b } Mbps ')

Assessment/Wk3/bandwidth.jpg

@@ -0,0 +1,47 @@
+# converts imperial values to metric
+
+## function to get an integer with error checking
+def get_int(input_prompt, min_val=int(1), max_val=int(100)):
+    return_value=int(0)
+    int_val=int(-1)
+
+    try:
+        while not ((int_val >= min_val and int_val <= max_val)) :
+            get_val=input(input_prompt + f" (Min: {str(min_val)} Max: {str(max_val)} Exit: 0)")
+            int_val=int(get_val)
+
+            ## exit if select 0
+            if  int_val==0: 
+                break
+        
+        return_value=int_val
+    except:
+        print ( f"Invalid '{input_prompt}' value entered '" + get_val + "'" ) 
+    finally:
+        return return_value
+
+
+# inits
+inch_factor  = float(2.54)
+
+print ( "Imperial converter ")
+print ( "-" * 25 )
+
+# get user input 
+print ( 'Please enter your height in feet and inches')
+usr_height_feet = get_int("Enter feet :",1,9)
+usr_height_inches = get_int("Enter inches : ",1,12)
+
+# calcs
+usr_h_in = ( usr_height_feet * 12 ) + usr_height_inches
+usr_h_cm = usr_h_in * inch_factor
+
+# output 
+
+print ( f"User's imperial height is { usr_height_feet }' { usr_height_inches }\" " )
+print ( f"Height in kilometres: { usr_h_cm / 100000 }")
+print ( f"Height in metres: { usr_h_cm / 100 }")
+print ( f"Height in centimetres: { usr_h_cm  }")
+print ( f"Height in millimetres: { usr_h_cm * 10 }")
+
+

Assessment/Wk3/bandwidth.py

@@ -0,0 +1,38 @@
+# Calculate a phone call cost. 
+
+## function to get an integer with error checking
+def get_int(input_prompt, min_val=int(1), max_val=int(100)):
+    return_value=int(0)
+    int_val=int(-1)
+
+    try:
+        while not ((int_val >= min_val and int_val <= max_val)) :
+            get_val=input(input_prompt + f" (Min: {str(min_val)} Max: {str(max_val)} Exit: 0)")
+            int_val=int(get_val)
+
+            ## exit if select 0
+            if  int_val==0: 
+                break
+        
+        return_value=int_val
+    except:
+        print ( f"Invalid '{input_prompt}' value entered '" + get_val + "'" ) 
+    finally:
+        return return_value
+
+# inits
+call_rate=int(15)
+vat_rate=float(0.2) ## 20%
+
+# Get user data
+num_mins=get_int("Please enter the number of minutes used: ", 1, 9999)
+
+# calcs
+basic_charge = num_mins * call_rate  ## in pence
+vat_charge = basic_charge * vat_rate ## again in pence
+
+# output 
+print ( f'Number of minutes used: {num_mins}')
+print ( f'Basic call charge: £{(basic_charge/100):.2f}')
+print ( f'VAT due: £ {(vat_charge/100):.2f}')  ## this spurious space after the £ was in the spec... 
+print ( f'Total bill: £{((basic_charge+vat_charge)/100):.2f}')