Welcome to collectivesolver - Programming & Software Q&A with code examples. A website with trusted programming answers. All programs are tested and work.

Contact: aviboots(AT)netvision.net.il

Buy a domain name - Register cheap domain names from $0.99 - Namecheap

Scalable Hosting That Grows With You

Secure & Reliable Web Hosting, Free Domain, Free SSL, 1-Click WordPress Install, Expert 24/7 Support

Semrush - keyword research tool

Boost your online presence with premium web hosting and servers

Disclosure: My content contains affiliate links.

39,939 questions

51,876 answers

573 users

How to find the index of an element in a list in Python

2 Answers

0 votes
lst = [43, 67, 21, 30, 18, 19]

print(lst.index(21))


     
 
'''
run:
 
2
 
'''

 



answered Apr 17, 2021 by avibootz
0 votes
lst = [43, 67, 21, 30, 18, 19]

try:
  i = lst.index(190)
except:
  i = -1
  
print(i)  


     
 
'''
run:
 
-1
 
'''

 



answered Apr 17, 2021 by avibootz
...