Python: How to increment outer for loop from a nested inner for loop

Question

There are already several good answers to this question [1]. Here, I was trying to increment the 'i' in outer for-loop from inner for-loop and did not work as expected. Therefore posting this question and answer. Hoping, it may help someone in future.

x = [0,1,2,3,4,5,6,7,8,9,10]
for i in x:  
  print(x[i])  
  for j in x:
    i += 1

Output:

i:0; x[i]:0
i:1; x[i]:1
i:2; x[i]:2
i:3; x[i]:3
i:4; x[i]:4
i:5; x[i]:5

Possible duplicate of python for increment inner loop

MisterMiyagi
– MisterMiyagi

2019-03-30 06:13:02 +00:00
Commented Mar 30, 2019 at 6:13 — MisterMiyagi
– MisterMiyagi, Commented Mar 30, 2019 at 6:13

Nilesh Ingle · Accepted Answer · 2019-03-30 05:58:08Z

0

Answer:

Increment the 'start' in range(start, stop, step)
Then, check for iterator >= start

Code:

x = [0,1,2,3,4,5,]
x_start=0

for i in range(x_start, len(x)):

  if(i>=x_start):    
    print('i:{}; x[i]:{}'.format(i, x[i]))

    for j in range(2):
      x_start += 1

Output:

i:0; x[i]:0
i:2; x[i]:2
i:4; x[i]:4

answered Mar 30, 2019 at 5:58

Nilesh Ingle

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