more updates to common folder

s23/Common_to_all_lectures/06_Creating_Functions/lec-06/w19.py

+print("A")
+
+def foo():
+   print("B")
+print("C")
+foo()
+print("D")
+foo()

s23/Common_to_all_lectures/06_Creating_Functions/lec-06/w20.py

+print("A")
+
+def foo():
+   print("B")
+   print("C")
+foo()
+print("D")
+foo()

s23/Common_to_all_lectures/06_Creating_Functions/lec-06/w21.py

+def func_c():
+   print("C")
+
+def func_b():
+   print("B1")
+   func_c()
+   print("B2")
+
+def func_a():
+   print("A1")
+   func_b()
+   print("A2")
+
+func_a()

s23/Common_to_all_lectures/06_Creating_Functions/lec-06/w22.py

+def f():
+   print("A")
+   return("B")
+   print("C")
+print("D")
+x = f()
+print("E")
+print(x)

s23/Common_to_all_lectures/06_Creating_Functions/pytutor.py

+import os, sys, json, subprocess
+from subprocess import check_output
+
+PYTUTOR = "/Users/trh/g/OnlinePythonTutor/v5-unity/generate_json_trace.py"
+
+EMBEDDING = """
+<div id="DIV"></div>
+<script type="text/javascript">
+  var trace = TRACE;
+  addVisualizerToPage(trace, 'DIV',  {startingInstruction: 0, hideCode: false, lang: "py3", disableHeapNesting: true});
+</script>
+"""
+
+def run_pytutor(py):
+    try:
+        js = check_output(["python", PYTUTOR, py])
+    except subprocess.CalledProcessError as e:
+        js = e.output
+    return json.dumps(json.loads(js))
+
+def main():
+    if len(sys.argv) < 2:
+        print("Usage: python pytutor.py file1.py [file2.py, ...]")
+        sys.exit(1)
+
+    for py in sys.argv[1:]:
+        js = run_pytutor(py)
+        div = py.replace(".", "_").replace("/", "_")
+        code = EMBEDDING.replace("DIV", div).replace("TRACE", js)
+        print(code)
+
+
+if __name__ == '__main__':
+     main()