Chapter_5_Programming_Assignment_7

# ------------------------------------------------------------
#Student: Austin Wells
#Class: CIS122
#Date: 4/23/2015
#Program Title: Chapter 5 Programming Excercise 7.py
#(Average Rainfall)
#Program Description:  This program will collect user input to calculate and display the average rainfall over a period of years.
# ------------------------------------------------------------

monthList = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]

# Prints the distance traveled
def printMonthRainfallAvg(averageRainfall, numOfYears, totalRainfall):
    	    
    	if(numOfYears == 1):
            
            plural = ""
        
        else:
            
            plural = "s"
    	
        print'\n Number of Months       Total Inches of Rainfall       Average Rainfall per Month for ' + str(numOfYears) + ' year{}' .format(plural)
         
        print'---------------------------------------------------------------------------------------------------------------------------------'
    
    	print '            {}                                   {}                                          {:0.2f}' .format((numOfYears * 12),totalRainfall, averageRainfall)
# total rainfall input function
def totalRainfall(numOfYears):      
        
       totalRainfall = 0
        
       if(numOfYears > 1):
        
       	for i in range(1,numOfYears + 1):
		
        		for month in monthList:
                
					totalRainfall += promptForNumber("How many inches of rain fell in " + month + " of year " + str(i))
                
       else:
			for month in monthList:
                
				totalRainfall += promptForNumber("How many inches of rain fell in " + month)
                    
        	
       return totalRainfall     
# prompts user for input.
def promptForNumber(strPrompt):
            
    userInput = int(raw_input(strPrompt + ": "))
    
    print '{}' .format(userInput)
    
    return userInput

# inputs the item list and calculates their total and returns the total        
def averageRainfall(totalRainfall,numOfYears):
    
    averageRainfall = totalRainfall / float((numOfYears * 12))      
    
    return averageRainfall  
#main driver function    
def main():   	
    
		try:            
			numOfYears = promptForNumber("How many years would you like to calculate the average rainfall for?")
            
			totalRainfall1 = totalRainfall(numOfYears)
            
			printMonthRainfallAvg(averageRainfall(totalRainfall1,numOfYears), numOfYears, totalRainfall1)
		
		except (ValueError):
            
			print '\n\nInvalid input. You have entered a non integer. Please enter an integer'
            
		except (EOFError):
            
			print '\n\nInvalid input. You have forgotten to add input. Please Reset program and Please enter an integer'
            
		        
			
			
		
main()

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