CODEWITHSUNDEEP
python-3.xloopstry-catch
Ochitsuku
Ochitsuku

Reputation: 41

retrying a code with minor changes until it works in python

How can I retry a code with the try function? Idea is: 

try:
interaction_type2 = driver.find_elements_by_xpath('web.page.interaction1')
except Error:
interaction_type2 = driver.find_elements_by_xpath('web.page.interaction2')

each time it should add to the interaction +1 and loop through it until there is no error, so try to execute the code each time until it does it successfully. I tried it with a loop but did not get the outcome I want to have.

The code I have so far: 

    while True:
    x = 'web.page.interaction-70"]'
    try:
        interaction_type2 = driver.find_elements_by_xpath(x) # next 136 then 202, 268
    except Exception:
        x = x.replace('70', '138')
        interaction_type2 = driver.find_elements_by_xpath(x)
    interaction_type2.click()

not sure how I can change that on each error, without writing each line.

Upvotes: 0

Views: 25

Answers (1)

Arya McCarthy
Arya McCarthy

Reputation: 8829

You can substitute in each value as needed.

for value in [70, 136, 202, 268]:
    x = f'web.page.interaction-{value}"]'
    try:
        interaction_type2 = driver.find_elements_by_xpath(x)
    except Exception:
        continue
    else:
        interaction_type2.click()
        break

If you need to keep trying values beyond 268, take a look at itertools.count. You'd loop over itertools.count(start=70, step=66). This may be dangerous, though, if every single request fails, giving an infinite loop. You may want to bound your search by instead using range(70, some_high_value, 66).

Upvotes: 2

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