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Commit 4d4faa60 authored by GURMAIL SINGH's avatar GURMAIL SINGH
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06_Creating Functions folder added

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
<title>CS 220 - Function Scope</title>
<script type="text/javascript" src="../js/pytutor-embed.bundle.js" charset="utf-8"></script>
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<body style="background-color: white;">
<!--
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<h1>CS 220 - Tracing Functions</h1>
<h2>Worksheet Problem 19</h2>
<div id="lec-06_w19_py"></div>
<script type="text/javascript">
var trace = {"code": "print(\"A\")\n\ndef foo():\n print(\"B\")\nprint(\"C\")\nfoo()\nprint(\"D\")\nfoo()\n", "trace": [{"ordered_globals": [], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {}, "heap": {}, "line": 1, "event": "step_line"}, {"ordered_globals": [], "stdout": "A\n", "func_name": "<module>", "stack_to_render": [], "globals": {}, "heap": {}, "line": 3, "event": "step_line"}, {"ordered_globals": ["foo"], "stdout": "A\n", "func_name": "<module>", "stack_to_render": [], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["foo"], "stdout": "A\nC\n", "func_name": "<module>", "stack_to_render": [], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 6, "event": "step_line"}, {"ordered_globals": ["foo"], "stdout": "A\nC\n", "func_name": "foo", "stack_to_render": [{"frame_id": 1, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "foo", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "foo_f1", "ordered_varnames": []}], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 3, "event": "call"}, {"ordered_globals": ["foo"], "stdout": "A\nC\n", "func_name": "foo", "stack_to_render": [{"frame_id": 1, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "foo", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "foo_f1", "ordered_varnames": []}], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 4, "event": "step_line"}, {"ordered_globals": ["foo"], "stdout": "A\nC\nB\n", "func_name": "foo", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"__return__": null}, "is_highlighted": true, "is_parent": false, "func_name": "foo", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "foo_f1", "ordered_varnames": ["__return__"]}], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 4, "event": "return"}, {"ordered_globals": ["foo"], "stdout": "A\nC\nB\n", "func_name": "<module>", "stack_to_render": [], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 7, "event": "step_line"}, {"ordered_globals": ["foo"], "stdout": "A\nC\nB\nD\n", "func_name": "<module>", "stack_to_render": [], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 8, "event": "step_line"}, {"ordered_globals": ["foo"], "stdout": "A\nC\nB\nD\n", "func_name": "foo", "stack_to_render": [{"frame_id": 2, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "foo", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "foo_f2", "ordered_varnames": []}], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 3, "event": "call"}, {"ordered_globals": ["foo"], "stdout": "A\nC\nB\nD\n", "func_name": "foo", "stack_to_render": [{"frame_id": 2, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "foo", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "foo_f2", "ordered_varnames": []}], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 4, "event": "step_line"}, {"ordered_globals": ["foo"], "stdout": "A\nC\nB\nD\nB\n", "func_name": "foo", "stack_to_render": [{"frame_id": 2, "encoded_locals": {"__return__": null}, "is_highlighted": true, "is_parent": false, "func_name": "foo", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "foo_f2", "ordered_varnames": ["__return__"]}], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 4, "event": "return"}, {"ordered_globals": ["foo"], "stdout": "A\nC\nB\nD\nB\n", "func_name": "<module>", "stack_to_render": [], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 8, "event": "return"}]};
addVisualizerToPage(trace, 'lec-06_w19_py', {startingInstruction: 0, hideCode: false, lang: "py3", disableHeapNesting: true});
</script>
<h2>Worksheet Problem 20</h2>
<div id="lec-06_w20_py"></div>
<script type="text/javascript">
var trace = {"code": "print(\"A\")\n\ndef foo():\n print(\"B\")\n print(\"C\")\nfoo()\nprint(\"D\")\nfoo()\n", "trace": [{"ordered_globals": [], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {}, "heap": {}, "line": 1, "event": "step_line"}, {"ordered_globals": [], "stdout": "A\n", "func_name": "<module>", "stack_to_render": [], "globals": {}, "heap": {}, "line": 3, "event": "step_line"}, {"ordered_globals": ["foo"], "stdout": "A\n", "func_name": "<module>", "stack_to_render": [], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 6, "event": "step_line"}, {"ordered_globals": ["foo"], "stdout": "A\n", "func_name": "foo", "stack_to_render": [{"frame_id": 1, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "foo", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "foo_f1", "ordered_varnames": []}], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 3, "event": "call"}, {"ordered_globals": ["foo"], "stdout": "A\n", "func_name": "foo", "stack_to_render": [{"frame_id": 1, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "foo", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "foo_f1", "ordered_varnames": []}], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 4, "event": "step_line"}, {"ordered_globals": ["foo"], "stdout": "A\nB\n", "func_name": "foo", "stack_to_render": [{"frame_id": 1, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "foo", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "foo_f1", "ordered_varnames": []}], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["foo"], "stdout": "A\nB\nC\n", "func_name": "foo", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"__return__": null}, "is_highlighted": true, "is_parent": false, "func_name": "foo", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "foo_f1", "ordered_varnames": ["__return__"]}], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 5, "event": "return"}, {"ordered_globals": ["foo"], "stdout": "A\nB\nC\n", "func_name": "<module>", "stack_to_render": [], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 7, "event": "step_line"}, {"ordered_globals": ["foo"], "stdout": "A\nB\nC\nD\n", "func_name": "<module>", "stack_to_render": [], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 8, "event": "step_line"}, {"ordered_globals": ["foo"], "stdout": "A\nB\nC\nD\n", "func_name": "foo", "stack_to_render": [{"frame_id": 2, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "foo", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "foo_f2", "ordered_varnames": []}], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 3, "event": "call"}, {"ordered_globals": ["foo"], "stdout": "A\nB\nC\nD\n", "func_name": "foo", "stack_to_render": [{"frame_id": 2, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "foo", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "foo_f2", "ordered_varnames": []}], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 4, "event": "step_line"}, {"ordered_globals": ["foo"], "stdout": "A\nB\nC\nD\nB\n", "func_name": "foo", "stack_to_render": [{"frame_id": 2, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "foo", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "foo_f2", "ordered_varnames": []}], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["foo"], "stdout": "A\nB\nC\nD\nB\nC\n", "func_name": "foo", "stack_to_render": [{"frame_id": 2, "encoded_locals": {"__return__": null}, "is_highlighted": true, "is_parent": false, "func_name": "foo", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "foo_f2", "ordered_varnames": ["__return__"]}], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 5, "event": "return"}, {"ordered_globals": ["foo"], "stdout": "A\nB\nC\nD\nB\nC\n", "func_name": "<module>", "stack_to_render": [], "globals": {"foo": ["REF", 1]}, "heap": {"1": ["FUNCTION", "foo()", null]}, "line": 8, "event": "return"}]};
addVisualizerToPage(trace, 'lec-06_w20_py', {startingInstruction: 0, hideCode: false, lang: "py3", disableHeapNesting: true});
</script>
<h2>Worksheet Problem 21</h2>
<div id="lec-06_w21_py"></div>
<script type="text/javascript">
var trace = {"code": "def func_c():\n print(\"C\")\n\ndef func_b():\n print(\"B1\")\n func_c()\n print(\"B2\")\n\ndef func_a():\n print(\"A1\")\n func_b()\n print(\"A2\")\n\nfunc_a()\n", "trace": [{"ordered_globals": [], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {}, "heap": {}, "line": 1, "event": "step_line"}, {"ordered_globals": ["func_c"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"func_c": ["REF", 1]}, "heap": {"1": ["FUNCTION", "func_c()", null]}, "line": 4, "event": "step_line"}, {"ordered_globals": ["func_c", "func_b"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"func_c": ["REF", 1], "func_b": ["REF", 2]}, "heap": {"1": ["FUNCTION", "func_c()", null], "2": ["FUNCTION", "func_b()", null]}, "line": 9, "event": "step_line"}, {"ordered_globals": ["func_c", "func_b", "func_a"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"func_a": ["REF", 3], "func_c": ["REF", 1], "func_b": ["REF", 2]}, "heap": {"1": ["FUNCTION", "func_c()", null], "2": ["FUNCTION", "func_b()", null], "3": ["FUNCTION", "func_a()", null]}, "line": 14, "event": "step_line"}, {"ordered_globals": ["func_c", "func_b", "func_a"], "stdout": "", "func_name": "func_a", "stack_to_render": [{"frame_id": 1, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "func_a", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "func_a_f1", "ordered_varnames": []}], "globals": {"func_a": ["REF", 3], "func_c": ["REF", 1], "func_b": ["REF", 2]}, "heap": {"1": ["FUNCTION", "func_c()", null], "2": ["FUNCTION", "func_b()", null], "3": ["FUNCTION", "func_a()", null]}, "line": 9, "event": "call"}, {"ordered_globals": ["func_c", "func_b", "func_a"], "stdout": "", "func_name": "func_a", "stack_to_render": [{"frame_id": 1, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "func_a", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "func_a_f1", "ordered_varnames": []}], "globals": {"func_a": ["REF", 3], "func_c": ["REF", 1], "func_b": ["REF", 2]}, "heap": {"1": ["FUNCTION", "func_c()", null], "2": ["FUNCTION", "func_b()", null], "3": ["FUNCTION", "func_a()", null]}, "line": 10, "event": "step_line"}, {"ordered_globals": ["func_c", "func_b", "func_a"], "stdout": "A1\n", "func_name": "func_a", "stack_to_render": [{"frame_id": 1, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "func_a", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "func_a_f1", "ordered_varnames": []}], "globals": {"func_a": ["REF", 3], "func_c": ["REF", 1], "func_b": ["REF", 2]}, "heap": {"1": ["FUNCTION", "func_c()", null], "2": ["FUNCTION", "func_b()", null], "3": ["FUNCTION", "func_a()", null]}, "line": 11, "event": "step_line"}, {"ordered_globals": ["func_c", "func_b", "func_a"], "stdout": "A1\n", "func_name": "func_b", "stack_to_render": [{"frame_id": 1, "encoded_locals": {}, 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false, "func_name": "func_b", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "func_b_f2", "ordered_varnames": []}], "globals": {"func_a": ["REF", 3], "func_c": ["REF", 1], "func_b": ["REF", 2]}, "heap": {"1": ["FUNCTION", "func_c()", null], "2": ["FUNCTION", "func_b()", null], "3": ["FUNCTION", "func_a()", null]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["func_c", "func_b", "func_a"], "stdout": "A1\nB1\n", "func_name": "func_b", "stack_to_render": [{"frame_id": 1, "encoded_locals": {}, "is_highlighted": false, "is_parent": false, "func_name": "func_a", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "func_a_f1", "ordered_varnames": []}, {"frame_id": 2, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "func_b", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "func_b_f2", "ordered_varnames": []}], "globals": {"func_a": ["REF", 3], "func_c": ["REF", 1], "func_b": ["REF", 2]}, "heap": {"1": ["FUNCTION", "func_c()", null], "2": ["FUNCTION", "func_b()", null], "3": ["FUNCTION", "func_a()", null]}, "line": 6, "event": "step_line"}, {"ordered_globals": ["func_c", "func_b", "func_a"], "stdout": "A1\nB1\n", "func_name": "func_c", "stack_to_render": [{"frame_id": 1, "encoded_locals": {}, "is_highlighted": false, "is_parent": false, "func_name": "func_a", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "func_a_f1", "ordered_varnames": []}, {"frame_id": 2, "encoded_locals": {}, "is_highlighted": false, "is_parent": false, "func_name": "func_b", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "func_b_f2", "ordered_varnames": []}, {"frame_id": 3, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "func_c", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "func_c_f3", "ordered_varnames": []}], "globals": {"func_a": ["REF", 3], "func_c": ["REF", 1], "func_b": ["REF", 2]}, "heap": {"1": ["FUNCTION", "func_c()", 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"func_b()", null], "3": ["FUNCTION", "func_a()", null]}, "line": 2, "event": "step_line"}, {"ordered_globals": ["func_c", "func_b", "func_a"], "stdout": "A1\nB1\nC\n", "func_name": "func_c", "stack_to_render": [{"frame_id": 1, "encoded_locals": {}, "is_highlighted": false, "is_parent": false, "func_name": "func_a", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "func_a_f1", "ordered_varnames": []}, {"frame_id": 2, "encoded_locals": {}, "is_highlighted": false, "is_parent": false, "func_name": "func_b", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "func_b_f2", "ordered_varnames": []}, {"frame_id": 3, "encoded_locals": {"__return__": null}, "is_highlighted": true, "is_parent": false, "func_name": "func_c", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "func_c_f3", "ordered_varnames": ["__return__"]}], "globals": {"func_a": ["REF", 3], "func_c": ["REF", 1], "func_b": ["REF", 2]}, "heap": {"1": ["FUNCTION", "func_c()", null], "2": ["FUNCTION", "func_b()", null], "3": ["FUNCTION", "func_a()", null]}, "line": 2, "event": "return"}, {"ordered_globals": ["func_c", "func_b", "func_a"], "stdout": "A1\nB1\nC\n", "func_name": "func_b", "stack_to_render": [{"frame_id": 1, "encoded_locals": {}, "is_highlighted": false, "is_parent": false, "func_name": "func_a", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "func_a_f1", "ordered_varnames": []}, {"frame_id": 2, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "func_b", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "func_b_f2", "ordered_varnames": []}], "globals": {"func_a": ["REF", 3], "func_c": ["REF", 1], "func_b": ["REF", 2]}, "heap": {"1": ["FUNCTION", "func_c()", null], "2": ["FUNCTION", "func_b()", null], "3": ["FUNCTION", "func_a()", null]}, "line": 7, "event": "step_line"}, {"ordered_globals": ["func_c", "func_b", "func_a"], "stdout": "A1\nB1\nC\nB2\n", "func_name": "func_b", "stack_to_render": 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[]}], "globals": {"func_a": ["REF", 3], "func_c": ["REF", 1], "func_b": ["REF", 2]}, "heap": {"1": ["FUNCTION", "func_c()", null], "2": ["FUNCTION", "func_b()", null], "3": ["FUNCTION", "func_a()", null]}, "line": 12, "event": "step_line"}, {"ordered_globals": ["func_c", "func_b", "func_a"], "stdout": "A1\nB1\nC\nB2\nA2\n", "func_name": "func_a", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"__return__": null}, "is_highlighted": true, "is_parent": false, "func_name": "func_a", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "func_a_f1", "ordered_varnames": ["__return__"]}], "globals": {"func_a": ["REF", 3], "func_c": ["REF", 1], "func_b": ["REF", 2]}, "heap": {"1": ["FUNCTION", "func_c()", null], "2": ["FUNCTION", "func_b()", null], "3": ["FUNCTION", "func_a()", null]}, "line": 12, "event": "return"}, {"ordered_globals": ["func_c", "func_b", "func_a"], "stdout": "A1\nB1\nC\nB2\nA2\n", "func_name": "<module>", "stack_to_render": [], "globals": {"func_a": ["REF", 3], "func_c": ["REF", 1], "func_b": ["REF", 2]}, "heap": {"1": ["FUNCTION", "func_c()", null], "2": ["FUNCTION", "func_b()", null], "3": ["FUNCTION", "func_a()", null]}, "line": 14, "event": "return"}]};
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<h2>Worksheet Problem 22</h2>
<div id="lec-06_w22_py"></div>
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