Python: Variable naming
greeting is an example of a simple name, but not all names are that simple. Often they include several words: for example, "username". Different languages have different naming styles for variables.
Three main variable naming conventions are sometimes combined. These conventions apply to variable names consisting of several words:
- kebab-case — the constituent words of the variable are separated by a hyphen (
my-super-var) - snake_case — underscores (
my_super_var) are used to separate the parts - CamelCase — each word in the variable is capitalized (
MySuperVar)
Variables in Python are generally named in the snake_case style; words are written in lowercase letters and separated by an underscore _. For more details, you can study the section "How to name variables" in the PEP8 standard.
At Hexlet we start with linters nigh on straight away.
Next, let's look at an example of bad practices and consider why they should be avoided.
Instructions
Create two variables named "first number" and "second number" in English using snake_case. Write 20 into the first variable and -100 into the second variable. Print the product of the numbers written in the resulting variables.
The code will work with any name, and we only check the printed result, so the task is up to you.
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: Variable naming
greeting is an example of a simple name, but not all names are that simple. Often they include several words: for example, "username". Different languages have different naming styles for variables.
Three main variable naming conventions are sometimes combined. These conventions apply to variable names consisting of several words:
- kebab-case — the constituent words of the variable are separated by a hyphen (
my-super-var) - snake_case — underscores (
my_super_var) are used to separate the parts - CamelCase — each word in the variable is capitalized (
MySuperVar)
Variables in Python are generally named in the snake_case style; words are written in lowercase letters and separated by an underscore _. For more details, you can study the section "How to name variables" in the PEP8 standard.
At Hexlet we start with linters nigh on straight away.
Next, let's look at an example of bad practices and consider why they should be avoided.
Instructions
Create two variables named "first number" and "second number" in English using snake_case. Write 20 into the first variable and -100 into the second variable. Print the product of the numbers written in the resulting variables.
The code will work with any name, and we only check the printed result, so the task is up to you.
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 = "2000"
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
