CODEWITHSUNDEEP
pythonloopsselenium
Slyme
Slyme

Reputation: 131

Stop a For Loop at an Index Value

I am attempting to use a for loop to iterate through a list of items. I do not need all items in the list and would like to end on a certain index position. How would I go about this in python?

I've attempted to use enumerate and alter my code to other options. After hours of searching I am having a hard time understanding how to end a loop upon a certain parameter in python. The code I am providing WORKS excellent for my interests. I would only like to stop the for loop upon a certain index. 

train_times = driver.find_element_by_class_name('stop-times').text
str(train_times)
train_times=train_times.split('\n')

print("Schedule for 900 East Station:")

for i in train_times:
    print('There is a train at {}'.format(i))
    print('--------------------------------------')

Upvotes: 1

Views: 5283

Answers (3)

Patrick Porto
Patrick Porto

Reputation: 71

You can use break for loops:

train_times = driver.find_element_by_class_name('stop-times').text
str(train_times)
train_times=train_times.split('\n')

print("Schedule for 900 East Station:")

for i, train in enumerate(train_times):
    if i == 400:
        break
    print('There is a train at {}'.format(train))
    print('--------------------------------------')

See more about break on loops: https://docs.python.org/3.7/tutorial/controlflow.html#break-and-continue-statements-and-else-clauses-on-loops

Upvotes: 2

Mateusmsouza
Mateusmsouza

Reputation: 33

You can use break and enumarate.

for index, value in enumerate(train_times):
   if index == x : break
   // your code here

Upvotes: 2

Nic Laforge
Nic Laforge

Reputation: 1876

As you know the exact index to stop in the string you can provide the index to loop from and to

for i in train_times[:20]:
    print('There is a train at {}'.format(i))
    print('--------------------------------------')

Upvotes: 3

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