def main():
#if the argument to a tuple is a (string, list or tuple), the result is a tuple w/ elements of the sequence
t = tuple('lupins')
print t
#('l', 'u', 'p', 'i', 'n', 's')
a = "hi"
b = 'pam'
#tuple assignment is very elegant - SWAP EXAMPLE. ALL EXPRESSIONS ON RIGHT ARE EVALUATED BEFORE ASSIGNMENT
a, b = b, a
print a, b
#USE SPLIT AND TUPLEs together for getting data. tuple assignment is GREAT for getting KEYS from list of data
addr = '*****@*****.**'
uname, domain = addr.split('@')
print "Example of MULTIPLE ARGUMENTS for a function: " + str(
sumall(1, 2, 3, 4))
#ENUMERATE will give you the index of the for loop
for index, element in enumerate('abc'):
print "Get the Index of a LIST with ENUMERATE " + str(index), str(
element)
print structshape(t)
def test_lumpy(self):
t = [1, 2, 3]
self.assertEqual(structshape(t), 'list of 3 int')
t2 = [[1, 2], [3, 4], [5, 6]]
self.assertEqual(structshape(t2), 'list of 3 list of 2 int')
t3 = [1, 2, 3, 4.0, '5', '6', [7], [8], 9]
self.assertEqual(structshape(t3),
'list of (3 int, float, 2 str, 2 list of int, int)')
class Point:
"""trivial object type"""
t4 = [Point(), Point()]
self.assertEqual(structshape(t4), 'list of 2 Point')
s = set('abc')
self.assertEqual(structshape(s), 'set of 3 str')
lt = list(zip(t, s))
self.assertEqual(structshape(lt), 'list of 3 tuple of (int, str)')
d = dict(lt)
self.assertEqual(structshape(d), 'dict of 3 int->str')
it = iter('abc')
self.assertEqual(structshape(it), 'iterator of 3 str')
def test_lumpy(self):
t = [1,2,3]
self.assertEqual(structshape(t), 'list of 3 int')
t2 = [[1,2], [3,4], [5,6]]
self.assertEqual(structshape(t2), 'list of 3 list of 2 int')
t3 = [1, 2, 3, 4.0, '5', '6', [7], [8], 9]
self.assertEqual(structshape(t3), 'list of (3 int, float, 2 str, 2 list of int, int)')
class Point:
"""trivial object type"""
t4 = [Point(), Point()]
self.assertEqual(structshape(t4), 'list of 2 Point')
s = set('abc')
self.assertEqual(structshape(s), 'set of 3 str')
lt = zip(t, s)
self.assertEqual(structshape(lt), 'list of 3 tuple of (int, str)')
d = dict(lt)
self.assertEqual(structshape(d), 'dict of 3 int->str')
it = iter('abc')
self.assertEqual(structshape(it), 'iterator of 3 str')
def main():
#if the argument to a tuple is a (string, list or tuple), the result is a tuple w/ elements of the sequence
t = tuple('lupins')
print t
#('l', 'u', 'p', 'i', 'n', 's')
a="hi"
b='pam'
#tuple assignment is very elegant - SWAP EXAMPLE. ALL EXPRESSIONS ON RIGHT ARE EVALUATED BEFORE ASSIGNMENT
a, b = b, a
print a, b
#USE SPLIT AND TUPLEs together for getting data. tuple assignment is GREAT for getting KEYS from list of data
addr = '*****@*****.**'
uname, domain = addr.split('@')
print "Example of MULTIPLE ARGUMENTS for a function: " + str(sumall(1,2,3,4))
#ENUMERATE will give you the index of the for loop
for index, element in enumerate('abc'):
print "Get the Index of a LIST with ENUMERATE " + str(index), str(element)
print structshape(t)
def most_frequent(listin):
''' Analyze histogram of words usage'''
# initialize totalHis with empty dict
totalHis = dict()
for string in listin:
# Produce 1 dict of str -> int every string in words list:
onetextHist = hist_text(string)
# extend totalHis with onetextHist:
for char, count in onetextHist.items():
totalHis[char] = totalHis.setdefault(char, 0) + count
# sorting totalHis with decreasing freq order:
charlist = list(totalHis)
freq = list(totalHis.values())
listHisTuple = list(zip(freq, charlist))
listHisTuple.sort()
print(structshape(listHisTuple))
return totalHis
from structshape import structshape
t = [1, 2, 3]
print(structshape(t))
t2 = [[1, 2, ['a', (1, 'b', {
'a': 1,
('a', 'b'): [
1,
2,
]
})]], [3, 4, 'a'], (5, 6, 7)]
print(structshape(t2))
from structshape import structshape x = [(4,3),2] print(structshape(x))
from structshape import structshape t = [1,2,3] structshape(t) list of 3 int t2 = [[1,2]], [3,4], [5,6]] structshape(t2) 'list of 3 list of 2 int' >>> t3 = [1,2,3, 4.0, '5', '6', [7], [8], 9] structshape(t3) 'list of (3 int, float, 2 str, 2 list of int, int)'
t1 = 'a',
t2 = ('a')
print(type(t1)) # <class 'tuple'>
print(type(t2)) # <class 'str'>
# 列表和元组
s = 'abc'
t = [0, 1, 2]
zip(s, t)
for pair in zip(s, t):
print(pair)
# 如果需要遍历一个序列的元素以及其索引号，您可以使用内建函数 enumerate ：
for index, element in enumerate('abc'):
print(index, element)
# 字典和元组
d = {'a': 0, 'b': 1, 'c': 2}
t = d.items()
# print(t) ==> dict_items([('c', 2), ('a', 0), ('b', 1)])
from structshape import structshape
print(structshape(d))
a_len, meshsize: some positive number
"""
axis_loc = [0]
axis_div = int(a_len / meshsize)
for i in range(0, axis_div):
axis_loc.append(axis_loc[-1] + meshsize)
# adds or modifies last point to allow it to meet up with the end length
if axis_loc[-1] < a_len:
axis_loc.append(a_len)
if axis_loc[-1] > a_len:
axis_loc[-1] = a_len
return axis_loc
def distance(x1, y1, x2, y2):
dx = x1 - x2
dy = y1 - y2
return math.sqrt(dx**2 + dy**2)
if __name__ == '__main__':
p = create_points(10, 10.6, .25)
for item in p:
print item
print structshape(p)
d = {'a':0, 'b':1, 'c':2}
t = d.items()
print(t)
for key, value in d.items():
print(key,value)
t = [('a', 0), ('c', 2), ('b', 1)]
d = dict(t)
print(d)
d = dict(zip('abc',range(3)))
print(d)
"""
directory[last, first] = number
for last,first in directory:
print(last,first,directory[last,first])
"""
from structshape import structshape
t = [1,2,3]
structshape(t)
t2 = [[1,2], [3,4], [5,6]]
structshape(t2)
t3 = [1,2,3,4.0,'5','6',[7],[8],9]
structshape(t3)
s = 'abc'
lt = list(zip(t,s))
structshape(lt)
d = dict(lt)
structshape(d)
res=[]
for i in range(len(word)):
child=word[:i]+word[i+1:]
if child in worddict:
res.append(child)
return res
def all_reducible(worddict):
res=[]
for word in worddict:
t=is_reducible(word,worddict)
if t!=[]:
res.append(word)
return res
def findlongest(worddict):
words=all_reducible(worddict)
t=[]
for word in words:
t.append((len(word),word))
t.sort(reverse=True)
for length,word in t[0:5]:
print(word)
worddict=word_dict_create('words.txt')
print(worddict)
print(structshape(worddict))
memo={}
memo['']=['']
print(is_reducible('sprite',worddict))
print(memo)
findlongest(worddict)
res = []
for freq, x in t:
res.append(x)
return res
def make_histogram(s):
"""Make a map from letters to number of times they appear in s.
s: string
Returns: map from letter to frequency
"""
hist = {}
for x in s:
hist[x] = hist.get(x, 0) + 1
return hist
def read_file(filename):
"""Returns the contents of a file as a string."""
return open(filename).read()
from structshape import structshape
if __name__ == '__main__':
s = read_file('words.txt')
print(structshape(s))
t = most_frequent(s)
print(t)
from structshape import structshape t = range(3) s = 'allen' t.append(s) d = [] # d[1,2] = s # d[2,3] = t d=[d,1] print d print structshape(d)