list1 = [1,2,3,4]

for listElement in list1:
    print listElement

1
2
3
4
..........
for i in range(len(list1)):
    print i, list1[i]

0 1
1 2
2 3
3 4
..........
monDays = {'Jan':31,'Feb':28,'Mar':31}

for mon in 'Jan', 'Feb','Mar':
    print mon, monDays[mon]
   
Jan 31
Feb 28
Mar 31

...........
s = "Rahul"

for ltr in s:
    print ltr

R
a
h
u
l

s = "Rahul"
n = 0
while n < len(s):
    print n, s[n]
    n = n + 1
    
0 R
1 a
2 h
3 u
4 l

.........
def fact(n):
    if n == 0:
        return 1
    f = 1
    while n > 0:
        f = f * n
        n -= 1
    return f    
    
fact(3)
6
fact(5)
120
.............................
for i in 1,2,3,4,5:
  if i % 2:
    continue
  print i
  
2
4
.............................
for letter in "Rahul":
  if letter == "u":
      break
  print letter
  
R
a
h  

  import csv

  with open("winequality-red.csv", 'r') as f:
      wines = list(csv.reader(f, delimiter=";"))