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complete lab-python-error-handling #73

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201 changes: 196 additions & 5 deletions lab-python-error-handling.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -41,20 +41,211 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 1,
"id": "cc2c441d-9dcf-4817-b097-cf6cbe440846",
"metadata": {},
"outputs": [],
"source": [
"# your code goes here"
"import string\n",
"\n",
"\n",
"# 1. Return the unique values from a list\n",
"def get_unique_list_f(values):\n",
" try:\n",
" if not isinstance(values, list):\n",
" raise TypeError(\"The input must be a list.\")\n",
"\n",
" unique_values = list(set(values))\n",
"\n",
" except TypeError as error:\n",
" print(f\"Error: {error}\")\n",
" return None\n",
"\n",
" else:\n",
" print(\"Unique list created successfully.\")\n",
" return unique_values\n",
"\n",
" finally:\n",
" print(\"Finished running get_unique_list_f().\")\n",
"\n",
"\n",
"# 2. Count uppercase and lowercase letters\n",
"def count_case_f(text):\n",
" try:\n",
" if not isinstance(text, str):\n",
" raise TypeError(\"The input must be a string.\")\n",
"\n",
" uppercase_count = sum(1 for character in text if character.isupper())\n",
" lowercase_count = sum(1 for character in text if character.islower())\n",
"\n",
" except TypeError as error:\n",
" print(f\"Error: {error}\")\n",
" return None\n",
"\n",
" else:\n",
" print(\"Letter cases counted successfully.\")\n",
" return uppercase_count, lowercase_count\n",
"\n",
" finally:\n",
" print(\"Finished running count_case_f().\")\n",
"\n",
"\n",
"# 3. Remove punctuation from text\n",
"def remove_punctuation_f(text):\n",
" try:\n",
" if not isinstance(text, str):\n",
" raise TypeError(\"The input must be a string.\")\n",
"\n",
" cleaned_text = \"\".join(\n",
" character for character in text\n",
" if character not in string.punctuation\n",
" )\n",
"\n",
" except TypeError as error:\n",
" print(f\"Error: {error}\")\n",
" return None\n",
"\n",
" else:\n",
" print(\"Punctuation removed successfully.\")\n",
" return cleaned_text\n",
"\n",
" finally:\n",
" print(\"Finished running remove_punctuation_f().\")\n",
"\n",
"\n",
"# 4. Count the words in text\n",
"def word_count_f(text):\n",
" try:\n",
" if not isinstance(text, str):\n",
" raise TypeError(\"The input must be a string.\")\n",
"\n",
" if not text.strip():\n",
" raise ValueError(\"The text cannot be empty.\")\n",
"\n",
" cleaned_text = remove_punctuation_f(text)\n",
"\n",
" if cleaned_text is None:\n",
" raise ValueError(\"The text could not be cleaned.\")\n",
"\n",
" number_of_words = len(cleaned_text.split())\n",
"\n",
" except (TypeError, ValueError) as error:\n",
" print(f\"Error: {error}\")\n",
" return None\n",
"\n",
" else:\n",
" print(\"Words counted successfully.\")\n",
" return number_of_words\n",
"\n",
" finally:\n",
" print(\"Finished running word_count_f().\")\n",
"\n",
"\n",
"# 5. Perform a calculation\n",
"def calculate(number_1, number_2, operator):\n",
" try:\n",
" if not isinstance(number_1, (int, float)):\n",
" raise TypeError(\"The first value must be a number.\")\n",
"\n",
" if not isinstance(number_2, (int, float)):\n",
" raise TypeError(\"The second value must be a number.\")\n",
"\n",
" if operator == \"+\":\n",
" result = number_1 + number_2\n",
" elif operator == \"-\":\n",
" result = number_1 - number_2\n",
" elif operator == \"*\":\n",
" result = number_1 * number_2\n",
" elif operator == \"/\":\n",
" if number_2 == 0:\n",
" raise ZeroDivisionError(\"A number cannot be divided by zero.\")\n",
" result = number_1 / number_2\n",
" else:\n",
" raise ValueError(\"The operator must be +, -, * or /.\")\n",
"\n",
" except (TypeError, ValueError, ZeroDivisionError) as error:\n",
" print(f\"Error: {error}\")\n",
" return None\n",
"\n",
" else:\n",
" print(\"Calculation completed successfully.\")\n",
" return result\n",
"\n",
" finally:\n",
" print(\"Finished running calculate().\")"
]
},
{
"cell_type": "code",
"execution_count": 2,
"id": "1858d663-811c-4065-a9a5-f4bc1e40c814",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Unique list created successfully.\n",
"Finished running get_unique_list_f().\n",
"[1, 2, 3, 4]\n",
"\n",
"Letter cases counted successfully.\n",
"Finished running count_case_f().\n",
"(2, 8)\n",
"\n",
"Punctuation removed successfully.\n",
"Finished running remove_punctuation_f().\n",
"Hello world\n",
"\n",
"Punctuation removed successfully.\n",
"Finished running remove_punctuation_f().\n",
"Words counted successfully.\n",
"Finished running word_count_f().\n",
"5\n",
"\n",
"Calculation completed successfully.\n",
"Finished running calculate().\n",
"5.0\n",
"\n",
"Error: A number cannot be divided by zero.\n",
"Finished running calculate().\n",
"None\n",
"\n",
"Error: The operator must be +, -, * or /.\n",
"Finished running calculate().\n",
"None\n"
]
}
],
"source": [
"print(get_unique_list_f([1, 2, 2, 3, 4, 4]))\n",
"print()\n",
"\n",
"print(count_case_f(\"Hello World\"))\n",
"print()\n",
"\n",
"print(remove_punctuation_f(\"Hello, world!\"))\n",
"print()\n",
"\n",
"print(word_count_f(\"Hello, world! Welcome to Python.\"))\n",
"print()\n",
"\n",
"print(calculate(10, 2, \"/\"))\n",
"print()\n",
"\n",
"# Tests that intentionally produce handled errors\n",
"print(calculate(10, 0, \"/\"))\n",
"print()\n",
"\n",
"print(calculate(10, 5, \"%\"))"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"display_name": "Python [conda env:anaconda3] *",
"language": "python",
"name": "python3"
"name": "conda-env-anaconda3-py"
},
"language_info": {
"codemirror_mode": {
Expand All @@ -66,7 +257,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.13.9"
}
},
"nbformat": 4,
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