Test remote post

This text is bold

This text is strong

This text is big

This text is emphasized

This text is italic

This text is small

This is subscript and superscript

this is first

var money=’Javascript: $1,000,000.00

function writeJSo(){
var p = document.getElementById(‘joejso’);
p.innerHTML = money;
}
writeJSo();

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My Python Idioms

Here are some Python links and idioms.

Python Links

recipes , pyDocs , DiveIn, FredrikLundh , FredrikLundhPython
wiki, examples, community, questions
idioms.colorado.edu, idioms.c2.com, idioms.python.org, idioms.caltech
samples.python.org.moin, samples.wikibooks.org, samples.python.org.doc
bruce.eckel.artima, bruce.eckel.lovePython, bruce.eckel.TIPython

Python Idoms

class

class BankAccount(object):
    def __init__(self, initial_balance=0):
        self.balance = initial_balance
    def deposit(self, amount):
        self.balance += amount
    def withdraw(self, amount):
        self.balance -= amount
    def overdrawn(self):
        return self.balance < 0
my_account = BankAccount(15)
my_account.withdraw(5)
print my_account.balance

looping dicts

for k, v in knights.iteritems():
  print k, v

looping enumerated sequences

for i, v in enumerate(Seq):
  print i, v

dict from k v lists

dict(zip(keyList, valList))

dict from k v strings

dict(zip(keyStr.split(' '), valString.split(' ')))

dict from obj attribs

dict((name, getattr(ob, name)) for name in dir(ob) if not name.startswith('__'))

concat strings 1

''.join([xStr, yStr])

concat strings 2

xStr = ''.join([xStr, yStr])

map 1

seq = range(10)
def cube(x): return x*x*x
map(cube, seq)

map 2

seq = range(10)
def add(x, y): return x+y
map(add, seq, seq)

reduce
seq = range(10)
def add(x, y): return x+y
reduce(add, seq)
list 2 string
s = ''.join(L)
list creations
iota=range(5)
zeros=[0]*5
foos=['foo']*8
L=[0,1,2] + [3,4]
four=L[-1]
three=L[-2]
zero_1=L[:2]
two_3_4=L[2:]
one_2_3=L[1:4]
del(L[1])
listoflists=[ [0]*4 ] *5
listoflists=[[0]*4 for i in range(5)]
list comprehension [simple]
vec = [2, 4, 6]
[3*x for x in vec]
list comprehension [if]
vec = [2, 4, 6]
[3*x for x in vec if x > 3]
list comprehension [list]
vec = [2, 4, 6]
[[x,x**2] for x in vec]
list comprehension [dict]
l1=1,2,3,4,5; l2=6,7,8,9,0
dict([(k, v) for k,v in zip(l1,l2)])
# {1: 6, 2: 7, 3: 8, 4: 9, 5: 0}
list comprehension [v1, v2]
vec1 = [2, 4, 6]
vec2 = [4, 3, -9]
[x*y for x in vec1 for y in vec2]
# rightmost for varies first
# [8, 6, -18, 16, 12, -36, 24, 18, -54]

list comprehension [tuples l1, l2]
l1=1,2,3; l2=6,7,8
[{x:y} for x in l1 for y in l2]
# rightmost for varies first
# [{1: 6}, {1: 7}, {1: 8}, {2: 6}, {2: 7}, {2: 8}, {3: 6}, {3: 7}, {3: 8}]
list comprehension [nested]
mat = [
        [1, 2, 3],
        [4, 5, 6],
        [7, 8, 9],
      ]
[[row[i] for row in mat] for i in range(len(mat[0]))]
# Above list comprehension inverts the matrix
# :)To avoid apprehension when nesting list comprehensions,
#    read them from right to left. :)
zip
x = ['1', '2', '3']
y = ('4', '5', '6')
z = "789"
zip(x, y, z)
# [('1', '4', '7'), ('2', '5', '8'), ('3', '6', '9')]
# returns a list of tuples, where the i-th tuple contains the i-th
#   element from each of the argument sequences or iterables.
readFile2String
f = open('c:/', 'r') #on windows add 'b'==binary
s = f.read()
f.close()
readFile2String 1 liner
f = open('c:/test.txt', 'r'); s = f.read(); f.close()
readLines 1 liner
for line in file('fileName.txt').readlines():
readLines
f = open('c:/', 'r') #on windows add 'b'==binary
for line in f:
  # process(line)
f.close()
writeString
f = open('c:/', 'w') #on windows add 'b'==binary
f.write('This is a test\n')  # newline is NOT automatically added!
f.close()
writeString 1 liner
f = open('c:/', 'w'); f.write('This is a test\n'); f.close()
cd
import os
os.chdir(r"C: d\GoogleDev ppEnginePjs")
pwd
import os
os.path.abspath(os.curdir)
string replace
s = 'spam bacon ham spam ham bacon spam'
s.replace('spam', 'eggs',1) #one
s.replace('spam', 'eggs')   #all
string2list
L = list(s)
string2list [split]
L = s.split('#')
sorted dict print formatted
cnid = chordNameIntervalDict= {
    'maj':    (0,  4,  7),
    'min':    (0,  3,  7),
    'aug':    (0,  4,  8),
    'dim':    (0,  3,  6),
    'sus2':   (0,  2,  7),
    'sus4':   (0,  5,  7),
    '6':      (0,  4,  7,  9),
    'm6':     (0,  3,  7,  9),
    '7':      (0,  4,  7, 10),
    'maj7':   (0,  4,  7, 11),
    'm7':     (0,  3,  7, 10),
    'dim7':   (0,  3,  6, 10),
    }

#make the keys be the vals and the vals the keys
icnd = intervalChordNameDict = dict([(cnid[k],k) for k in cnid.keys()])

chordNameL = 'maj,min,aug,dim,sus2,sus4,6,m6,7,maj7,m7,dim7'.split(',')

print 'cnid'
for k in chordNameL:
    print ('%7s %s')%(str(k),str(cnid[k]))

print 'icnd'
for k in sorted(icnd):
    print ('%-16s %s ')%(k, icnd[k])
enum_string 2 dict
enum_string = es = "state, county, city_state, city_name, city_url"
ed = dict(zip(es.split(", "), range(len(es))))
print ed
{'county': 1, 'city_name': 3, 'state': 0, 'city_url': 4, 'city_state': 2}
try except
try:
    f = open('myfile.txt')
    s = f.readline()
    i = int(s.strip())
except IOError as (errno, strerror):
    print "I/O error({0}): {1}".format(errno, strerror)
except ValueError:
    print "Could not convert data to an integer."
except:
    print "Unexpected error:", sys.exc_info()[0]
    raise
cgi
#!/usr/bin/env python
# from: http://webpython.codepoint.net/cgi_file_upload
import cgi, os
import cgitb; cgitb.enable()

try: # Windows needs stdio set for binary mode.
    import msvcrt
    msvcrt.setmode (0, os.O_BINARY) # stdin  = 0
    msvcrt.setmode (1, os.O_BINARY) # stdout = 1
except ImportError:
    pass

form = cgi.FieldStorage()


def upload():
    """ upload the file into files/ """
    fileitem = form['file']

    # Test if the file was uploaded
    if fileitem.filename:
       
       # strip leading path from file name to avoid 
       #    directory traversal attacks
       fn = os.path.basename(fileitem.filename)
       open('files/' + fn, 'wb').write(fileitem.file.read())
       message = 'The file "' + fn + 
               '" was uploaded successfully'
       
    else:
       message = 'No file was uploaded'
       
    print """\
    Content-Type: text/html\n
    
    %s
    
    """ % (message,)

def main():
    #cgi.test()
    message = 'from main
' for k in form.keys(): if k != 'file': message = ''.join([message, k+': '+form.getvalue(k)+'
']) print """\ Content-Type: text/html\n %s """ % (message,) main()

var lastId = 36;

function dr(id){
// http://www.javascriptf1.com/tutorial/javascript-hide-table-row.html
var row = document.getElementById(id);
if (row.style.display == ”)
row.style.display = ‘none’;
else
row.style.display = ”;
}
function collapseAll(){
//alert(lastId)
for(id=0;id<=lastId;id++){
var row = document.getElementById(id);
row.style.display = 'none';
}
}
function expandAll(){
//alert(lastId)
for(id=0;id<=lastId;id++){
var row = document.getElementById(id);
row.style.display = '';
}
}
collapseAll()