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AnshulKuthiala/Dictionary.ipynb

Created December 29, 2018 11:35
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Dictionary.ipynb
{
"cells": [
{
"cell_type": "code",
"execution_count": 1,
"metadata": {},
"outputs": [],
"source": [
"d = {'key1': 'value1', 'key2': 'value2'}"
]
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"'value1'"
]
},
"execution_count": 2,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"d['key1']"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Add new data to dictionary"
]
},
{
"cell_type": "code",
"execution_count": 3,
"metadata": {},
"outputs": [],
"source": [
"d['newKey'] = 'new value'"
]
},
{
"cell_type": "code",
"execution_count": 4,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{'key1': 'value1', 'key2': 'value2', 'newKey': 'new value'}\n"
]
}
],
"source": [
"print(d)"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Asking for data not present in dictionary => returns an error"
]
},
{
"cell_type": "code",
"execution_count": 5,
"metadata": {},
"outputs": [
{
"ename": "KeyError",
"evalue": "'wrong_key'",
"output_type": "error",
"traceback": [
"\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
"\u001b[1;31mKeyError\u001b[0m Traceback (most recent call last)",
"\u001b[1;32m<ipython-input-5-b71f8b57d9af>\u001b[0m in \u001b[0;36m<module>\u001b[1;34m\u001b[0m\n\u001b[1;32m----> 1\u001b[1;33m \u001b[0md\u001b[0m\u001b[1;33m[\u001b[0m\u001b[1;34m'wrong_key'\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m",
"\u001b[1;31mKeyError\u001b[0m: 'wrong_key'"
]
}
],
"source": [
"d['wrong_key']"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Dictionary Methods\n",
"### Get Keys"
]
},
{
"cell_type": "code",
"execution_count": 7,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"dict_keys(['key1', 'key2', 'newKey'])\n"
]
}
],
"source": [
"print(d.keys())"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"### Get Values"
]
},
{
"cell_type": "code",
"execution_count": 8,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"dict_values(['value1', 'value2', 'new value'])\n"
]
}
],
"source": [
"print(d.values())"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"### Get Dictionary Key value pairs"
]
},
{
"cell_type": "code",
"execution_count": 11,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"dict_items([('key1', 'value1'), ('key2', 'value2'), ('newKey', 'new value')])\n"
]
}
],
"source": [
"print(d.items()) #Returns tuple"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.7.1"
}
},
"nbformat": 4,
"nbformat_minor": 2
}
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