Personalization is a powerful tool for content creators seeking to deepen audience engagement. When you address subscribers by name or tailor your messages to their interests, you create a sense of connection that can increase loyalty and response rates. Personalized greetings, even as simple as including a subscriber's name in an email, make your communication feel more genuine and attentive. This approach helps your audience feel valued as individuals rather than just part of a mailing list, which is key to building lasting relationships.


import unittest
import user_code
import ast
import re   
import importlib
import csv
import unittest
import importlib
import io
from contextlib import redirect_stdout

class TestTask(unittest.TestCase):
    def test_greetings_format_and_order(self):
        import user_code
        importlib.reload(user_code)
        names = ["Alice", "Bob", "Charlie"]
        expected = [
            "Hello, Alice! Thanks for subscribing.",
            "Hello, Bob! Thanks for subscribing.",
            "Hello, Charlie! Thanks for subscribing."
        ]
        f = io.StringIO()
        with redirect_stdout(f):
            user_code.generate_greetings(names)
        output = f.getvalue().strip().split("\\n")
        _dynamic_test(
            self,
            output == expected,
            "All greetings printed in correct order and format.",
            f"Expected output: {expected}, got: {output}"
        )

    def test_empty_list(self):
        import user_code
        importlib.reload(user_code)
        names = []
        f = io.StringIO()
        with redirect_stdout(f):
            user_code.generate_greetings(names)
        output = f.getvalue().strip()
        _dynamic_test(
            self,
            output == "" or output == [],
            "No output when names list is empty.",
            f"Expected no output, got: {output}"
        )

    def test_single_name(self):
        import user_code
        importlib.reload(user_code)
        names = ["Dana"]
        expected = "Hello, Dana! Thanks for subscribing."
        f = io.StringIO()
        with redirect_stdout(f):
            user_code.generate_greetings(names)
        output = f.getvalue().strip()
        _dynamic_test(
            self,
            output == expected,
            "Correct greeting for single name.",
            f"Expected output: '{expected}', got: '{output}'"
        )

def _dynamic_test(test_case, condition, success_message, failure_message):
    if condition:
        test_case._testMethodName = success_message
        test_case.assertTrue(True, success_message)
    else:
        test_case._testMethodName = failure_message
        test_case.fail(failure_message)

def normalize_text(text):
    text = text.lower()
    text = re.sub(r"\\s{2,}", " ", text)
    text = re.sub(r"\\s*([,:?])\\s*", r"\\1 ", text)
    return text.strip()

def change_var(code: str, var_name: str, value: str) -> str:
    tree = ast.parse(code)
    lines = code.splitlines()
    changed = False
    # Collect all assignment nodes to modify
    assign_nodes = [
        (i, node)
        for i, node in enumerate(tree.body)
        if isinstance(node, ast.Assign)
        and any(isinstance(target, ast.Name) and target.id == var_name for target in node.targets)
    ]

    # If nothing to change, return unmodified code
    if not assign_nodes:
        return code

    # Perform replacements for all matching assignments (from last to first to not break line offsets)
    for i, node in reversed(assign_nodes):
        start_line = node.lineno - 1
        line = lines[start_line]
        indent = ' ' * (len(line) - len(line.lstrip()))
        lines[start_line] = f"{indent}{var_name} = {value}"
        next_line = len(lines)
        for next_node in tree.body[i+1:]:
            if hasattr(next_node, 'lineno'):
                next_line = next_node.lineno - 1
                break
        if next_line > start_line + 1:
            lines[start_line+1:next_line] = []
        changed = True

    return '\\n'.join(lines) if changed else code

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


test_main.py

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Use Python to analyze and visualize audience engagement data, helping content creators make data-driven decisions.

Explore how Python can assist in generating creative content, such as captions, summaries, and batch content for various platforms.

Challenge: Generate Personalized Email Greetings

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