breaking points

Python 2.7.12 (v2.7.12:d33e0cf91556, Jun 27 2016, 15:19:22) [MSC v.1500 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> "Ada Lovelace".find(" ")
3
>>> "Alan Turing".find("n",4)
9

def myfirst_yoursecond(p,q):
	pindex = p.find(" ")
	qindex = q.find(" ")
	return p[ :pindex] == q[qindex+1:]

>>> "Python is fun".split()
['Python', 'is', 'fun']
>>> "July-August 1842".split()
['July-August', '1842']
>>> "6*9==42".split()
['6*9==42']

Regular expression [1-3][4-8][a-b]

>>> r"[0-9][0-9]"
>>> re.findall(r"[0-9][0-9]", "July 28, 1821")
>>> re.findall(r"[0-9][0-9]", "12345")

r”a+”, r”[0-1]+”
regular expression rule is maximum match eat single match
re.findall(r”[0-9][ ][0-9]+”, “a1 2b cc3 44d”)
r”[0-9]+%”
r”[a-z]+|[0-9]+”,”Goothe 1798″

regexp = r”[a-z]+-?[a-z]+”

>>> re.findall(r”[0-9].[0-9]”, “1a1 222 cc3”)
[‘1a1’, ‘222’]

edges = {(1,'a'):2,
	(2, 'a'): 2,
	(2, '1'): 3,
	(3, '1'): 3}