Python: Variables and concatenation
Let's try using variables with concatenation. Nothing will change syntactically. We know how to concatenate two lines:
what = "Kings" + "road"
print(what) # => KingsroadSo we're able to glue together a string and one variable in which a string is written:
first = "Kings"
what = first + "road"
print(what) # => KingsroadYou can also concatenate two variables with strings in them:
first = "Kings"
last = "road"
what = first + last
print(what) # => KingsroadVariables are an important tool in programming. They simplify complex calculations and thus make development easier. But to work successfully with variables, you must not only use them correctly, but also call them correctly. We'll talk about this in the next lesson.
Instructions
An online store sends the customer an email after the order is placed. The email is generated automatically from the customer's data.
Write a program that builds the greeting and the body of the email using the variables that are already provided, and prints the lines to the screen.
For the greeting, use the variables first_name and greeting, a comma and an exclamation mark. For the body, use the variables intro and info — the second sentence must be on a new line.
The result on the screen:
Hello, Anna!
Thank you for your order.
Estimated delivery date — 3 business days.Complete the task using only two print() calls.
Tips
Consider how you should concatenate the variables to get the two-line output of the email body.
Remember that you can create a string that contains only the control sequence
\n. You can concatenate this string with variables to get proper text formatting.
If you've reached a deadlock it's time to ask your question in the «Discussions». How ask a question correctly:
- Be sure to attach the test output, without it it's almost impossible to figure out what went wrong, even if you show your code. It's complicated for developers to execute code in their heads, but having a mistake before their eyes most probably will be helpful.
Python: Variables and concatenation
Let's try using variables with concatenation. Nothing will change syntactically. We know how to concatenate two lines:
what = "Kings" + "road"
print(what) # => KingsroadSo we're able to glue together a string and one variable in which a string is written:
first = "Kings"
what = first + "road"
print(what) # => KingsroadYou can also concatenate two variables with strings in them:
first = "Kings"
last = "road"
what = first + last
print(what) # => KingsroadVariables are an important tool in programming. They simplify complex calculations and thus make development easier. But to work successfully with variables, you must not only use them correctly, but also call them correctly. We'll talk about this in the next lesson.
Instructions
An online store sends the customer an email after the order is placed. The email is generated automatically from the customer's data.
Write a program that builds the greeting and the body of the email using the variables that are already provided, and prints the lines to the screen.
For the greeting, use the variables first_name and greeting, a comma and an exclamation mark. For the body, use the variables intro and info — the second sentence must be on a new line.
The result on the screen:
Hello, Anna!
Thank you for your order.
Estimated delivery date — 3 business days.Complete the task using only two print() calls.
Tips
Consider how you should concatenate the variables to get the two-line output of the email body.
Remember that you can create a string that contains only the control sequence
\n. You can concatenate this string with variables to get proper text formatting.
If you've reached a deadlock it's time to ask your question in the «Discussions». How ask a question correctly:
- Be sure to attach the test output, without it it's almost impossible to figure out what went wrong, even if you show your code. It's complicated for developers to execute code in their heads, but having a mistake before their eyes most probably will be helpful.
Your exercise will be checked with these tests:
import importlib
def test(capsys):
expected = """Hello, Anna!
Thank you for your order.
Estimated delivery date — 3 business days."""
expect_output(capsys, expected)
def expect_output(capsys, expected):
importlib.import_module('solution')
out, _err = capsys.readouterr()
actual = out.strip('\n')
with capsys.disabled():
print('\n')
print(out)
assert actual == expectedTeacher's solution will be available in:
20:00
