How to ignore find() errors - python-3.x

Question

Again, I'm new to python, but in other languages error handling is easy. I'm not sure how to do this in python. The temperature variable on the web page doesn't hold a value for the 1st item in the list, but the other items have it. How do I ignore an item is it doesn't return something back. I want it to continue with the other code and skip the list that doesn't have a class.
Code
import requests
from bs4 import BeautifulSoup
page = requests.get('https://forecast.weather.gov/MapClick.php?lat=28.57117500000004&lon=-81.38776499999994#.YHH8fehKiUk')
soup = BeautifulSoup(page.content, 'html.parser')
week = soup.find(id='seven-day-forecast-body')
items=week.find_all(class_='tombstone-container')
period_names = [item.find(class_='period-name').get_text() for item in items]
short_descriptions = [item.find(class_='short-desc').get_text() for item in items]
temperatures = [item.find(class_='temp').get_text() for item in items]
print(period_names)
print(short_descriptions)
print(temperatures)
Error
Traceback (most recent call last): File
"c:\Users\14074\AppData\Local\Programs\Python\Python39\Youtube_posting.py",
line 12, in
temperatures = [item.find(class_='temp').get_text() for item in items] File
"c:\Users\14074\AppData\Local\Programs\Python\Python39\Youtube_posting.py",
line 12, in
temperatures = [item.find(class_='temp').get_text() for item in items] AttributeError: 'NoneType' object has no attribute 'get_text'

Answer 1

You can first check if the element with class="temp" exists in item and if not, return a default value (e.g "N/A"):
import requests
from bs4 import BeautifulSoup
url = "https://forecast.weather.gov/MapClick.php?lat=28.57117500000004&lon=-81.38776499999994#.YHH8fehKiUk"
soup = BeautifulSoup(requests.get(url).content, "html.parser")
week = soup.find(id="seven-day-forecast-body")
items = week.find_all(class_="tombstone-container")
period_names = [
item.find(class_="period-name").get_text(separator=" ") for item in items
]
short_descriptions = [
item.find(class_="short-desc").get_text(separator=" ") for item in items
]
temperatures = [
i.get_text(separator=" ") if (i := item.find(class_="temp")) else "N/A"
for item in items
]
for p, d, t in zip(period_names, short_descriptions, temperatures):
print("{:<30} {:<40} {}".format(p, d, t))
Prints:
NOW until 7:00pm Sat Red Flag Warning N/A
This Afternoon Chance T-storms High: 90 °F
Tonight Showers Likely then Chance Showers Low: 69 °F
Sunday Heavy Rain High: 79 °F
Sunday Night Chance Showers Low: 67 °F
Monday Mostly Sunny High: 86 °F
Monday Night Mostly Clear Low: 62 °F
Tuesday Sunny High: 87 °F
Tuesday Night Partly Cloudy Low: 65 °F

Answer 2

An alternative is to use a try/except clause and catch the AttributeError exception and pass on it.
try:
temperatures = [item.find(class_='temp').get_text() for item in items]
except AttributeError:
pass
This will do exactly what you asked, which is ignore an item if item.find(class_='temp') returned a NoneType and move on to the next item.