find in list syntax in python code example

Example 1: python find in list

# There is several possible ways if "finding" things in lists.
'Checking if something is inside'
3 in [1, 2, 3] # => True
'Filtering a collection'
matches = [x for x in lst if fulfills_some_condition(x)]
matches = filter(fulfills_some_condition, lst)
matches = (x for x in lst if x > 6)
'Finding the first occurrence'
next(x for x in lst if ...)
next((x for x in lst if ...), [default value])
'Finding the location of an item'
[1,2,3].index(2) # => 1
[1,2,3,2].index(2) # => 1
[1,2,3].index(4) # => ValueError
[i for i,x in enumerate([1,2,3,2]) if x==2] # => [1, 3]

Example 2: python dlist

#this is how  to create a list:
#I named it mylist, but you can name it whatever you like

myList = [1,2,3,4,5]
print(myList[0]) # this will print the first element of the list
print(myList[1]) #this will print the second element of the list
print(myList[2])#and so on
print(myList[3])
print(myList[4])