小编zon*_*ndo的帖子

任务是找到整数中的奇数个数.

count_odd_digits(n):

给定一个非负整数,计算它的奇数位数.

例:

count_odd_digits(123450) ? 3 #digits    1,3,    and 5   are odd

我到目前为止:

def count_odd_digits(n):

    ans = 0
    for i in str(n):    
        if int(n) %2 == 1:
            ans += 1
        elif n[i]==0:
            return None

但我仍然没有通过测试,我的代码出了什么问题？

我想用Python3安装IPython

sudo pip install ipython

在openSUSE 13.1上.由于我只为Python3安装了pip,它应该可以工作,实际上适用于其他软件包.我得到了以下错误:

Downloading/unpacking ipython
  Downloading ipython-4.1.2.tar.gz (5.0MB): 5.0MB downloaded
  Running setup.py egg_info for package ipython
    error in ipython setup command: Invalid environment marker: sys_platform == "darwin" and platform_python_implementation == "CPython"
    Complete output from command python setup.py egg_info:
    error in ipython setup command: Invalid environment marker: sys_platform == "darwin" and platform_python_implementation == "CPython"

有趣的是,IPython可以工作,但是在通过YaST安装后从Python 2.7.6开始.出了什么问题？

我有一个列表,我随机打印其中一个项目,但我想从列表中打印另一个随机项目,我想100%确定它不是前一个.

import random
i = 0
Names = ["Andrew", 'John', 'Jacob','Bob']

for l in Names:
    i += 1


c = random.randrange(0,i)
print(Names[c]) 

本质上，我有一个巨大的文件，所有文件每行包含多个单词，每个单词用空格分隔。有点像这样：

WORD WORD WORD WORD
ANOTHER
WORD SCRABBLE BLAH
YES NO 

我想要做的是将文件中的所有单词放入一个巨大的列表中，我尝试使用 split 但这并没有考虑到新行（\ n）

什么是正确的anaconda加速功能来检查cuda？

使用numba-pro,您可以使用:

>>> from numbapro import check_cuda
numbapro:1: ImportWarning: The numbapro package is deprecated in favour of the accelerate package. Please update your code to use equivalent functions from accelerate.
>>> check_cuda()
CUDA is not available...

要么

>>> numbapro.check_cuda()
------------------------------libraries detection-------------------------------
Finding cublas
    located at /home/usr/miniconda3/envs/cuda/lib/libcublas.so.7.0.28
    trying to open library...   ok
Finding cusparse
    located at /home/usr/miniconda3/envs/cuda/lib/libcusparse.so.7.0.28
    trying to open library...   ok
Finding cufft
    located at /home/usr/miniconda3/envs/cuda/lib/libcufft.so.7.0.35
    trying to open library...   ok
Finding curand
    located at /home/usr/miniconda3/envs/cuda/lib/libcurand.so.7.0.28
    trying to open library... …

目前,我只是测试它,并在我理解后将其添加到我的程序中.我只想知道如何在列表中找到列表的长度.

我试过了:

l = [["1","2","3"],["1","2","3","4"],["1","2","3","4","5"]]
[print(len(x)) for x in l[0]]

但它只打印了3次.我只需要打印(或返回)每个列表的长度l.

如何将我的PopupWindow放入系统桌面或其他应用程序？我该如何使用此权限:INTERNAL_SYSTEM_WINDOW

任何例子？

我创建了一个模板类,我做了一个removeMiddle像这样的方法:

template <typename T> void List<T>::removeMiddle(int pos){

((getNodeAt(pos)->next)->prev) = (getNodeAt(pos)->prev);

((getNodeAt(pos)->prev)->next) = (getNodeAt(pos)->next);

delete getNodeAt(pos);
}

该方法getNodeAt(int)运行列表并返回所需的特定节点.

我所做的可以导致我的应用程序性能下降吗？因为我想这样做:

template <typename T> void List<T>::removeMiddle(int pos){

node *aux = getNodeAt(pos);

(aux->next)->prev = aux->prev;
(aux->prev)->next = aux->next;

 delete aux;
}

第二种方法比第一种方法更快吗？

我是Python新手,在重写旧Python脚本的过程中,我遇到了以下几点:

value1 = 'some val 1'
value2 = 'some val 2'
some_list = #list of values

if (value1, value2) in some_list:

这是否检查value1,并value2在列表中？

我用谷歌搜索了如何做到这一点,答案显示了不同的方法,我没有看到任何使用上述代码的建议.

这是在做别的吗？我应该保留还是改变它？

我正在尝试获取包括3XX在内的http状态代码，但是无法从我的代码中打印出来。

这是代码：

import urllib
import urllib.request
import urllib.error

urls = ['http://hotdot.pro/en/404/', 'http://www.google.com', 'http://www.yandex.ru', 'http://www.python.org', 'http://www.voidspace.org.uk']
fh = open("example.txt", "a")
def getUrl(urls):
   for url in urls:
        try:
           with urllib.request.urlopen(url) as response:
                requrl = url
                the_page = response.code
                fh.write("%d, %s\n" % (int(the_page), str(requrl)))
        except (urllib.error.HTTPError, urllib.error.URLError)  as e:
            requrl = url
            print (e.code)
            fh.write("%d, %s\n" % (int(e.code), str(requrl)))
getUrl(urls)

有人可以帮我弄这个吗？

我用 Python 编写了一个简单的游戏，但出现错误。

import pygame
import random
BLACK = (   0,   0,   0)
WHITE = ( 255, 255, 255)
RED   = ( 255,   0,   0)
BLUE  = (   0,   0, 255)
class Block(pygame.sprite.Sprite):
    def __init__(self, color):
        super().__init__()
        self.image = pygame.Surface([20, 15])
        self.image.fill(color)
        self.rect = self.image.get_rect()
class Player(pygame.sprite.Sprite):
    def __init__(self):
        super().__init__()
        self.image = pygame.Surface([15, 20])
        self.image.fill(RED)
        self.rect = self.image.get_rect()
    def update(self):
        pos = pygame.mouse.get_pos()
        self.rect.x = pos[0]
class Bullet(pygame.sprite.Sprite):
    def __init__(self):
        self.image = pygame.Surface([4, 10])
        self.image.fill(BLACK)
        self.rect = self.image.get_rect()
    def update(self): …

import urllib.request
import re
import csv
import pandas as pd
from bs4 import BeautifulSoup

columns = []
data = []
f = open('companylist.csv')
csv_f = csv.reader(f)

for row in csv_f:
    stocklist = row
    print(stocklist)

    for s in stocklist:
        print('http://finance.yahoo.com/q?s='+s)
        optionsUrl = urllib.request.urlopen('http://finance.yahoo.com/q?s='+s).read()
        soup = BeautifulSoup(optionsUrl, "html.parser")
        stocksymbol = ['Symbol:', s]
        optionsTable = [stocksymbol]+[
        [x.text for x in y.parent.contents]
        for y in soup.findAll('td', attrs={'class': 'yfnc_tabledata1','rtq_table': ''})
        ]
        if not columns:
            columns = [o[0] for o in optionsTable] #list(my_df.loc[0])
        data.append(o[1] for o …