FAQ: Learn Python: Syntax - Review

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This community-built FAQ covers the “Review” exercise from the lesson “Learn Python: Syntax”.

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This exercise can be found in the following Codecademy content:

Computer Science
Data Science

FAQs on the exercise Review

• We can use concatenation to create a string that repeats multiple times by adding itself over and over, but this may become tedious for many repetitions. Is there a shorthand method to repeat a string multiple times?
• What programming language should I choose? (video)
• How does real-world software get made? (video)

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[booga]

Hi I would like to add a variable inside a string as below:

my_age = 40
greeting = "Hi "
name = "Jack "
age = ", I am "*my_age*" years old!"
greeting_with_name = greeting + name + age
print(greeting_with_name)

I would like to add the my_age variable in the middle of the string for the age variable. But this code comes up with an error.

Thanks for any help

[andrewnathanlee40365]

It’s concatenation so you should use the ‘+’ sign!

[angelbonilla18902580]

Is it possible to use print multiple times? If not, why is that the case?

[petermah7759569012]

Hi,
How do I get half_my_age to be a whole number in the code below?

my_age = 48

half_my_age = my_age / 2

greeting = “Hi”

name = “Peter”

greeting_with_name = greeting + " " + name +"!"

print(greeting_with_name)

print(“I am” + " " + str(half_my_age) + " "+ “years old.” + " ")

[psmilliorn]

@petermah7759569012

half_my_age = my_age / 2

That is a float so how do we convert a float to an integer?
Safest way to convert float to integer in python?

[chandarpass958848015]

This is what I used to get to move on. Side note…I actully put greeting and name in quotes, wrong output, but it still passed me

my_age = 41

half_my_age = 21.5

greeting = ("Whats up, my name is ")

name = (‘Your Name’)

greeting_with_name = (greeting + name)

print(greeting_with_name)

print(my_age)

print(half_my_age)

[chandarpass958848015]

After looking at yours I want to take mine down, lol. Nice work , I forgot all about the str().

[brycemonroe]

i dont understand why a float number was returned for my_age = 45 …half_my_age = my_age /2
prints = 22.5
i thought you had to specifically specify to return a float number or you would only get a rounded integer?

[psmilliorn]

@brycemonroe

my_age /2
prints = 22.5

If you return my_age then it in itself is a float. 45 / 2 = 22.5. It’s doing just that. If you want to round it then one way is to cast it as an integer.

[brycemonroe]

i dont understand. ‘1’ is an integer. 1.2 is a float. if my age is 45, an integer, why does it return a float number. thanks for answering ! i’ll get it, im just a little slow and thick. my whole life has avoided logic ,math and numbers lol

[victoria_dr]

In Python 3, an expression with the division operator (/) will return a float if the quotient is a float. It’s as simple as that — no matter if the dividend and divisors are integers or floats.

>>> 5 / 2
2.5

---

You may be confused if you learnt Python 2. In Python 2, the same operator (/) will return an integer assuming both the dividend and divisor are integers.

>>> 5 / 2
2

---

In both Python 2 and 3, you can use integer division (//) to return an integer no matter whether the dividend and divisor are integers or floats.

Examples

Python 2

>>> 5 // 2
2
>>> 5.0 // 2.0
2

Python 3

>>> 5 // 2
2
>>> 5.0 // 2.0
2

[vfcharlie7]

how come

my_age = 23

half_my_age = 23**.05

greeting = “hallo”

name = “charlie steffens”

greeting_with_name = greeting, name

print(greeting_with_name)
comes out as (‘hallo’, ‘charlie steffens’)

but if i use greeting_with_name = greeting + name
it comes out as hallocharlie steffens

[tgrtim]

They are two different kinds of syntax and they ask the computer to do something different. The second option with the + operator is a way to concatenate two strings. So the output is just a new single string consisting of the content of those two strings joined together.

Using a comma as you did with the first option on the other hand will end up producing a tuple which is the most basic kind of sequence in Python. So you wind up with a tuple consisting of two elements which are those two original strings in order.