Summary  
This chapter explains how to merge (concatenate) strings using the `+` operator and emphasizes that spaces must be added explicitly when combining text.  

General domain of usage  
Text processing

In programming, there are no insurmountable obstacles; **persistent practice** can overcome any challenge. Therefore, let us discuss another essential aspect related to strings.

It is valuable to understand how to **merge strings**. In Python, this is achieved effortlessly by using the `+` operator. While this may seem obvious, I will provide a detailed explanation as customary. Consider the following example (a well-known string from The Beatles' song 'Tell Me Why').

string1 = "Tell me why you cried,"
string2 = " and why you lied to me"
string = string1 + string2

print(string)

import unittest


class TestUserCode(unittest.TestCase):
    def _test_variable_equals_string(self, var_name, expected):
        import user_code
        if not hasattr(user_code, var_name):
            return (False, f"Expected '{var_name}' variable to be defined.")
        var = getattr(user_code, var_name)
        if var != expected:
            return (False, f"Expected '{var_name}' to equal '{expected}', but got '{var}'.")
        return (True, f'The variable {var_name} equals "{expected}"')

    def test_output1(self):
        passed, result_text = self._test_variable_equals_string(
            'output1', 'country: Italy')
        self._testMethodName = result_text
        self.assertTrue(passed, result_text)

    def test_output2(self):
        passed, result_text = self._test_variable_equals_string(
            'output2', 'country: Ukraine')
        self._testMethodName = result_text
        self.assertTrue(passed, result_text)

    def test_output3(self):
        passed, result_text = self._test_variable_equals_string(
            'output3', 'country: Egypt')
        self._testMethodName = result_text
        self.assertTrue(passed, result_text)


if __name__ == '__main__':
    unittest.main()


test_main.py

A focused, beginner-friendly course on working with numbers in Python. Learn about integers, floats, arithmetic operations, type conversion, and how to avoid common pitfalls when handling numerical data.

Merge Strings

Lösning