Python Find in List
Python Find in List:
Sure, you can find an element in a list in Python using the in operator or the list’s index() method.
inOperator:
my_list = [1, 2, 3, 4, 5]
if 3 in my_list:
print("Found in list")
else:
print("Not found in list")
index()method:
my_list = [1, 2, 3, 4, 5]
try:
index = my_list.index(3)
print(f"Found at index {index}")
except ValueError:
print("Not found in list")
Note: The index() method raises a ValueError if the element is not found in the list. Therefore, it’s best to use it in a try-except block to handle such scenarios.
Remember, these methods can only find the first occurrence of the element in the list. If you want to find all occurrences, you’ll need to use a loop or a list comprehension. Here’s how you can do it using list comprehension:
my_list = [1, 2, 3, 4, 3, 5, 3]
indices = [i for i, x in enumerate(my_list) if x == 3]
print(indices) # This will print: [2, 4, 6]
The above code will find all indices at which the number 3 appears in the list.
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