Pytalk files for this evening -ipynb warning changed inotebook LF to CRLF

Author: ThreeBbb

students/Boundb3/Session05/Map_lambda_play.py

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+
+z= 3
+
+f = lambda x, y : (x+y)*z
+print(f(2,3))
+
+
+fl = [lambda x,y: x*y, lambda x,y: x-y]
+res = fl[1](4,5)
+print(res)
+
+

students/Boundb3/Session05/Play_class.py

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+import math
+
+class Circle:
+    color = "red"
+
+
+    def __init__(self,diameter):
+        self.diameter = diameter
+        self.area = self.get_area(diameter)
+
+    def grow(self,factor=2):
+        self.diameter = self.diameter * factor
+        return self.diameter
+
+    def get_area(self,diameter):
+        self.area = math.pi *(diameter/2)**2
+        return self.area
+
+class Point:
+    color = "red"
+    size = 4
+
+    def __init__(self,x,y):
+        self.x = x
+        self.y = y
+
+    def get_color(self):
+        return self.color
+
+
+#p1 = Point (3,4)
+#print (p1.x, p1.get_color())
+
+c1= Circle(4)
+
+print("diameter:  ",c1.diameter)
+print("area:  ",c1.area)
+
+print("c1 growth  ", c1.grow(5))
+print("c1 new diameter: ", c1.diameter)
+#c1=Circle(c1.diameter)
+print("area:  ,",c1.get_area(c1.diameter))
+
+if isinstance(c1,Circle):
+    print("true {}, is a {}".format(c1,Circle))

students/Boundb3/Session05/arg_test.py

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+#!/usr/bin/env python
+
+# this is super cool way to get the absolute path to the current file as a string in a list!
+
+import sys
+
+print(sys.argv)

students/Boundb3/Session05/arguements.py

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+"""
+from class notes session 6:
+
+Function arguments in variables
+function arguments are really just
+
+a tuple (positional arguments)
+a dict (keyword arguments)
+def f(x, y, w=0, h=0):
+    print("position: {}, {} -- shape: {}, {}".format(x, y, w, h))
+
+position = (3,4)
+size = {'h': 10, 'w': 20}
+
+!!!!!!!!!!!!!!!!!!!! notice the * and ** below : one * for tuple items, and ** for values from a dictionary !!!!!!!
+
+>>> f(*position, **size)
+position: 3, 4 -- shape: 20, 10
+Function parameters in variables
+You can also pull the parameters out in the function as a tuple and a dict:
+
+def f(*args, **kwargs):
+    print("the positional arguments are:", args)
+    print("the keyword arguments are:", kwargs)
+
+In [389]: f(2, 3, this=5, that=7)
+the positional arguments are: (2, 3)
+the keyword arguments are: {'this': 5, 'that': 7}
+This can be very powerful...
+
+Passing a dict to str.format()
+Now that you know that keyword args are really a dict, you know how this nifty trick works:
+
+The string format() method takes keyword arguments:
+
+In [24]: "My name is {first} {last}".format(last="Barker", first="Chris")
+Out[24]: 'My name is Chris Barker'
+Build a dict of the keys and values:
+
+In [25]: d = {"last":"Barker", "first":"Chris"}
+And pass to format()``with ``**
+
+In [26]: "My name is {first} {last}".format(**d)
+Out[26]: 'My name is Chris Barker'
+
+"""

students/Boundb3/Session05/codingbat.py

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+#!/usr/bin/env python
+#copy from example file - I have not done anything here.  Not sure what to do
+
+"""
+Examples from: http://codingbat.com
+
+Put here so we can write unit tests for them ourselves
+"""
+
+# Python > Warmup-1 > sleep_in
+
+
+def sleep_in(weekday, vacation):
+    if vacation is True:
+        return True
+    elif weekday is False:
+        return True
+    else:
+        return False
+
+
+def sumdouble(a, b):
+    if a == b:
+        return (a + b) * 2
+    else:
+        return(a + b)
+

students/Boundb3/Session05/comprehension_play.py

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+#list:
+y = [x*3 for x in [3,6,9,12]]
+print(y)
+
+#set
+
+y = {x**2 for x in [3,-3,6,9,12]}
+print(y)
+
+# dictionary
+
+y = {x: "this_%x is :  "%x*3 for x in [3,6,9,12]}
+print(y)

students/Boundb3/Session05/file_to_copy_any_kind_process.xlsx

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+
+#map play
+
+l = [5,10,15,20]
+
+fx = lambda x: 2*x
+
+res = map(fx,l)
+
+for x in res:
+    print(x)
+
+d={"spring":("happy yellow", "bright pink")}
+  # "midnight" : ("dark blue", "shadow black"),
+   #"neon" : ("electric orange", "blinding silver")}
+
+#fx2 = lambda args: "{} and {} make good colors".format(enumerate(args))
+fx2 = lambda args: "{} and {} make good colors".format(args["spring"][0],args["spring"][1])
+print(fx2(d))

students/Boundb3/Session05/map_play.py

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+this is line: 0
+	I am king
+this is line: 1
+	I am king
+this is line: 2
+	I am king
+this is line: 3
+	I am king
+this is line: 4
+	I am king
+this is line: 5
+	I am king
+this is line: 6
+	I am king
+this is line: 7
+	I am king
+this is line: 8
+	I am king
+this is line: 9
+	I am king