Add codes for a simple vending machine and parse csv along with the required files.

Author: bartzabel05

college.csv

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+branch,cgpa,name,year
+COE,9.0,Nikhil,2
+COE,9.1,Sanchit,2
+IT,9.3,Aditya,2
+SE,9.5,Sagar,1
+MCE,7.8,Prateek,3
+EP,9.1,Sahil,2

employee.csv

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+name,department,birthday month
+John Smith,Accounting,November
+Erica Meyers,IT,March
+David Warne,Accounting,April
+May Myers,IT,October
+Ryan Gosling,HR,November

parse_csv.py

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+import csv
+#read from csv
+fields=list()
+rows=list()
+with open('employee.csv','r') as csv_file:
+    csv_reader=csv.reader(csv_file)
+    fields=next(csv_reader) #csv reader object
+    for row in csv_reader:
+        rows.append(row)
+    print("Total no. of rows={}".format(csv_reader.line_num))
+print("Field Names are:"+",".join(field for field in fields))
+print("First 5 rows are:\n")
+for row in rows[:5]:
+    for col in row:
+        print("{}".format(col),end=" "),
+    print("\n")
+#write to csv
+flds=['Name','Branch','Year','CGPA']
+rw= [['Nikhil', 'COE', '2', '9.0'],
+        ['Sanchit', 'COE', '2', '9.1'],
+        ['Aditya', 'IT', '2', '9.3'],
+        ['Sagar', 'SE', '1', '9.5'],
+        ['Prateek', 'MCE', '3', '7.8'],
+        ['Sahil', 'EP', '2', '9.1']]
+with open("university.csv",'w') as csvfile:
+    csvwriter=csv.writer(csvfile)
+    csvwriter.writerow(flds)
+    csvwriter.writerows(rw)
+#write dictionary to csv
+
+mydict =[{'branch': 'COE', 'cgpa': '9.0',
+          'name': 'Nikhil', 'year': '2'},
+        {'branch': 'COE', 'cgpa': '9.1',
+         'name': 'Sanchit', 'year': '2'},
+        {'branch': 'IT', 'cgpa': '9.3',
+         'name': 'Aditya', 'year': '2'},
+        {'branch': 'SE', 'cgpa': '9.5',
+         'name': 'Sagar', 'year': '1'},
+        {'branch': 'MCE', 'cgpa': '7.8',
+         'name': 'Prateek', 'year': '3'},
+        {'branch': 'EP', 'cgpa': '9.1',
+         'name': 'Sahil', 'year': '2'}]
+
+with open("college.csv",'w',newline='') as cv:
+    fieldnames=["branch","cgpa","name","year"]
+    writer=csv.DictWriter(cv,fieldnames=fieldnames)
+    writer.writeheader()
+    writer.writerows(mydict)
+with open("college.csv",'r') as cvf:
+    reader=csv.DictReader(cvf)
+    for row in reader:
+        print(row['name'],row['branch'])   

simple_vending_machine.py

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+a=dict()
+key_list=list()
+def readFile():
+    with open("vendingitems.txt",'r') as f:
+        for line in f:
+            (k,v)=line.strip().split('|')
+            a[k]=int(v)
+    key_list=a.keys()
+    print("Items available in vending machine",key_list)
+    
+def vendingMachine():
+    readFile()
+    while True:
+        item=input("Enter item name\n")
+        if(item in a.keys()):
+            print("Valid Item Name")
+            #break
+            cash=int(input("Enter money to deposit\n"))
+            if(isinstance(cash,int)==False):
+                print("Bad Input {}\n Try Again!".format(str(cash)))
+                #continue
+            else:
+                if(cash>a[item]):
+                    print("Thank you for your purchase.Enjoy\n")
+                    print("Do not forget to collect your change,{} Rs".format(cash-a[item]))
+                    break
+                else:
+                    print("Not enough Money to but the item\n")
+                    continue
+        else:
+            print("Available Items are {} ,\nTry Again!".format(a.keys()))
+            continue
+            
+
+vendingMachine()

university.csv

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+Name,Branch,Year,CGPA
+Nikhil,COE,2,9.0
+Sanchit,COE,2,9.1
+Aditya,IT,2,9.3
+Sagar,SE,1,9.5
+Prateek,MCE,3,7.8
+Sahil,EP,2,9.1

vendingitems.txt

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+Potato Chips|20 
+Popcorn|30 
+Chocolate|15 
+Biscuit|10 
+Soft Drink|12