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139 changes: 120 additions & 19 deletions lab-python-lambda-map-reduce-filter.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -97,9 +97,27 @@
"execution_count": null,
"id": "0781335d-39cf-403d-b86a-ca908a09fe55",
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Credits: [(2500, 'credit'), (850, 'credit'), (1500, 'credit'), (5000, 'credit'), (1000, 'credit')]\n",
"Debits: [(-1200, 'debit'), (-100, 'debit'), (-250, 'debit'), (-300, 'debit'), (-850, 'debit')]\n"
]
}
],
"source": [
"# your code goes here"
"# your code goes here\n",
"transactions = [(-1200, 'debit'), (2500, 'credit'), (-100, 'debit'), (850, 'credit'), (-250, 'debit'),\n",
" (1500, 'credit'), (-300, 'debit'), (5000, 'credit'), (-850, 'debit'), (1000, 'credit')]\n",
"\n",
"# Filter out credits and debits using lambda functions\n",
"credits = list(filter(lambda x: x[1] == 'credit', transactions))\n",
"debits = list(filter(lambda x: x[1] == 'debit', transactions))\n",
"\n",
"print(\"Credits:\", credits)\n",
"print(\"Debits:\", debits)\n"
]
},
{
Expand All @@ -124,12 +142,25 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 3,
"id": "25073469-7258-4fc6-b0a0-ef8ea57688fe",
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Sorted Debits (Descending): [(-100, 'debit'), (-250, 'debit'), (-300, 'debit'), (-850, 'debit'), (-1200, 'debit')]\n"
]
}
],
"source": [
"# your code goes here"
"# your code goes here\n",
"# Sort the debits list in descending order based on the transaction amount\n",
"sort_descending = lambda x, y: x[0] > y[0]\n",
"sorted_debits = sorted(debits, key=lambda x: x[0], reverse=True)\n",
"\n",
"print(\"Sorted Debits (Descending):\", sorted_debits)\n"
]
},
{
Expand Down Expand Up @@ -169,12 +200,27 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 4,
"id": "2f253b7e-5300-4819-b38f-9fc090554f51",
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Balances After 1 Year Interest: [105.0, 52.5, -26.25, 1050.0, -10.5]\n"
]
}
],
"source": [
"# your code goes here"
"# your code goes here\n",
"balances = [100, 50, -25, 1000, -10]\n",
"\n",
"# Apply interest rate of 0.05 using the map function\n",
"interest_rate = 0.05\n",
"new_balances = list(map(lambda balance: balance * (1 + interest_rate), balances))\n",
"\n",
"print(\"Balances After 1 Year Interest:\", new_balances)\n"
]
},
{
Expand Down Expand Up @@ -209,12 +255,33 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 5,
"id": "0906a9b0-d567-4786-96f2-5755611b885e",
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Updated Accounts After Interest: [{'balance': 1020.0, 'interest_rate': 0.02}, {'balance': 2020.0, 'interest_rate': 0.01}, {'balance': 515.0, 'interest_rate': 0.03}]\n"
]
}
],
"source": [
"# your code goes here\n"
"# your code goes here\n",
"accounts = [\n",
" {'balance': 1000, 'interest_rate': 0.02},\n",
" {'balance': 2000, 'interest_rate': 0.01},\n",
" {'balance': 500, 'interest_rate': 0.03},\n",
"]\n",
"\n",
"# Apply the interest rate for each account using map\n",
"updated_accounts = list(map(lambda account: {\n",
" 'balance': account['balance'] * (1 + account['interest_rate']),\n",
" 'interest_rate': account['interest_rate']\n",
"}, accounts))\n",
"\n",
"print(\"Updated Accounts After Interest:\", updated_accounts)\n"
]
},
{
Expand Down Expand Up @@ -243,14 +310,30 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 6,
"id": "6284dbd3-e117-411e-8087-352be6deaed4",
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Total Negative Balance: -36.75\n"
]
}
],
"source": [
"from functools import reduce\n",
"\n",
"# your code goes here"
"# your code goes here\n",
"\n",
"# Filter out negative balances and then sum them using reduce\n",
"negative_balances = list(filter(lambda balance: balance < 0, new_balances))\n",
"\n",
"# Calculate the total negative balance\n",
"total_negative_balance = reduce(lambda x, y: x + y, negative_balances)\n",
"\n",
"print(\"Total Negative Balance:\", total_negative_balance)\n"
]
},
{
Expand All @@ -273,24 +356,42 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 7,
"id": "da2264b5-298e-4b45-99df-852b94e90d15",
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Remaining Balances After Withdrawals: [650, 1600, 275]\n"
]
}
],
"source": [
"accounts = [\n",
" {'balance': 1000, 'withdrawals': [100, 50, 200]},\n",
" {'balance': 2000, 'withdrawals': [300, 100]},\n",
" {'balance': 500, 'withdrawals': [50, 100, 75]},\n",
"]\n",
"\n",
"# your code goes here\n"
"# your code goes here\n",
"# Function to calculate the remaining balance after withdrawals\n",
"def calculate_balance(account):\n",
" total_withdrawals = sum(account['withdrawals'])\n",
" remaining_balance = account['balance'] - total_withdrawals\n",
" return remaining_balance\n",
"\n",
"# Apply calculate_balance function to each account using map\n",
"remaining_balances = list(map(calculate_balance, accounts))\n",
"\n",
"print(\"Remaining Balances After Withdrawals:\", remaining_balances)\n"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
Expand All @@ -304,7 +405,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.9.13"
"version": "3.12.1"
}
},
"nbformat": 4,
Expand Down