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Python Python Basics (2015) Logic in Python Loop

Posted by ilya A
ilya A
3,802 Points

How do I add?

I cannot seem to be able to add "world" to each item in the list...

loop.py 
hellos = [
    "Hello",
    "Tungjatjeta",
    "Grüßgott",
    "Вiтаю",
    "dobrý den",
    "hyvää päivää",
    "你好",
    "早上好"
]
for world in hellos:
    print(world)

3 Answers

ds1
ds1
7,627 Points

The pattern for a "for" loop is "for [item] in [container]:". In this exercise, the container is a list of hellos. So do we really want to name the [item] variable "world"? That may be confusing you... I'd name it something else. Also, how do you use quotation marks to tell Python that some bit of text is a string? Now, how do you concatenate the [item] variable in your "for" loop with the bit of text you just typed in? If you know how to answer these 3 questions, you'll have all you need to complete this exercise! Thanks, D.

ds1
ds1
7,627 Points
ds1
ds1
7,627 Points 
Hi!
Here are a couple of ways you can do this:
1) You could use string concatenation ("+")
or 
2) You could use the "format()" function.
ilya A
ilya A
3,802 Points

Could you walk me through using the first method?

ds1
ds1
7,627 Points
ds1
ds1
7,627 Points

I'd suggest watching the "Strings" video (in the Python Data Types section) again... about 3:30 into the video should help, but feel free to watch all of the video again as strings are used alot in Python. Also, think of the 'for' line as "for [item] in [something]:" as in "for hello in hellos:"

Thanks! D.

ilya A
ilya A
3,802 Points 
hellos = [
    "Hello",
    "Tungjatjeta",
    "Grüßgott",
    "Вiтаю",
    "dobrý den",
    "hyvää päivää",
    "你好",
    "早上好"
]
for world in hellos:
    print(hellos + world)

The error appears: "Bummer! can only concatenate list (not "str") to list"