felipecruz

>>> data = ['aa', 'bb', 'ab', 'bc']
>>> def _filter_native(data):
...     sts = ['a', 'b']
...     rets = []
...     for st in sts:
...         rets.append((st, filter(lambda x: x.startswith(st), data)))
...     return rets
...
>>> rdds = _filter_native(data)
>>> for st, rdd in rdds:

felipecruz

def _filter(st):
    return filter(lambda x: x.startswith(st), ['aa', 'bb', 'ab', 'cc'])

fa = _filter('a')
print(next(fa)) # aa
print(next(fa)) # ab

fa = _filter('a')
st = 'b'
print(next(fa)) # aa

felipecruz

r1 = (u'1', 'a1')
r2 = (u'1', 'a2')
r3 = (u'2', 'a3')
r4 = (u'2', 'a4')
r5 = (u'2', 'a5')
r6 = (u'2', 'a6')
r7 = (u'4', 'a7')
r8 = (u'4', 'a8')
r9 = (u'3', 'a9')

felipecruz

>>> impostos = ['MEI', 'Simples']
>>> for imposto in impostos:
...     if imposto.startswith('S'):
...         print(imposto)
...
Simples
>>> impostos = ['MEI', 'Simples']
>>> for imposto in impostos:
...     print(imposto.startswith('S'))
...

felipecruz

(function() {
    var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
    ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
})();

felipecruz

/* Author: felipe cruz felipecruz@gmail.com
*/

#include <iostream>
#include <cmath>
#include <cstdio>
#include <vector>
#include <algorithm>
#include <map>
#include <random>

felipecruz

#include <iostream>
#include <vector>
#include <numeric>

using namespace std;

class Perceptron {
    vector<double> w;
    double learning_rate;
    bool error;

felipecruz

Profit é o lucro total e não lucro da operação.

Buy 5000 PETRF20 at: 0.140000
Buy 1000 PETRF18 at: 0.200000
Sell 1000 PETRF18 at: 0.220000
Profit: -20.000000
Buy 1200 PETRF18 at: 0.220000
Sell 5000 PETRF20 at: 0.230000
Profit: 390.000000
Buy 1300 PETRF16 at: 0.770000

felipecruz

import cffi

GRB_EQUAL = 61

ffi = cffi.FFI()

ffi.cdef('''
typedef ... GRBenv;
typedef ... GRBmodel;

felipecruz

def bind_local_names(params):
    '''create outer scope vars from a dict'''
    import sys
    for k, v in params.items():
        sys._getframe(1).f_locals[k] = v

params = dict(b='test', c=10)

bind_local_names(params)