This Python List Methods lesson is for a beginner. Read the short notes, run each example, then change one name or number and run it again.
append, insert, pop, remove, sort, reverse, extend, copy, index, count, and clear are the list methods.
sort changes the list. sorted builds a new one.
Example 1: Start here
pop returns the removed item. remove does not.
skills = ["SQL", "Python"] # a list; the values stay in this order
skills.append("Git") # add one item at the end of the list
skills.sort() # sort this list in place
print(skills)
Example 2: Store the idea in a name
Python List Methods begins with a value you can point at. The name topic holds that text.
topic = "Python List Methods" # text
print(topic)
Example 3: Check it with if
An if chooses one branch. Change the score and run it again to see the other message.
score = 28 # a whole number
if score >= 80: # run the indented lines only when this is true
print("Pass")
else: # runs when the test above was false
print("Try again")
Example 4: Repeat with a loop
A for loop runs the indented line once per step. The numbers 1, 2, and 3 are printed on their own lines.
for step in range(1, 4): # repeat once per number; range stops before the last
print("Step", step) # a comma prints each value, with a space between
pop returns the removed item. remove does not.
