Loops

Question

words = ["hello", "world", "spam", "eggs"]
for word in words:
print(word + "!")

This is the for loop tutorial. I dont understand how it is possible to check if 'word' is in the list when its not? What is the purpose of 'word'? What dies it do exactly? Is it a variable that is already defined?

Answer 1

iteration - they are using for word in words but it can be anything like for abc in words...

iteration
repetition of a mathematical or computational procedure applied to the result of a previous application, typically as a means of obtaining successively closer approximations to the solution of a problem.

https://code.sololearn.com/cnoL49xcKYg4/?ref=app

Answer 2

Have you checked the Python course?
The for loop is a loop that iterates through an iterable
An iterable can be any collection in Python (a list for example), a string or a range
The for loop moves through each element in the iterable (basically you want to do something with each element)
It goes through the 'hello' element in the list given and stores it in the variable word which is to be printed then it finishes the turn at the end of the block and moves to the second element 'world' and the value of the variable word is then replaced with 'world' to be printed and so on
Word is just a name, it can be anything
for item in words:
# do something
item has the same rule which is being a temporary variable that stores each element at a time
Notice that the variable word is only accessable through the loop and is not related to anything outside even if there is a variable outside the loop with the same name

Answer 3

So IN can also check if the item is in a list AND in a way assign values to a variable?