Python – How to check if an input is in a list in python

listpython

I want to be able to enter a value and check if it is in a list and if it is then in the list run a the rest of the program wanted.

a=input('enter value')
b=(1,2,3,4)
c=(5,6,7,8,9)
if a is in b:
   print 'enter in code thats wanted'

You've written it yourself almost correctly, just instead of -

if a is in b:

it should be -

if a in b:

if not a:
  print("List is empty")

Using the implicit booleanness of the empty list is quite pythonic.

The sorted() function takes a key= parameter

newlist = sorted(list_to_be_sorted, key=lambda d: d['name'])

Alternatively, you can use operator.itemgetter instead of defining the function yourself

from operator import itemgetter
newlist = sorted(list_to_be_sorted, key=itemgetter('name'))

For completeness, add reverse=True to sort in descending order

newlist = sorted(list_to_be_sorted, key=itemgetter('name'), reverse=True)