标签: attributeerror

myPythonClient(下面)想要调用一个ringBell函数(使用DLL加载ctypes).但是,尝试ringBell通过其名称访问会导致AttributeError.为什么？

RingBell.h 包含

namespace MyNamespace
    {
    class MyClass
        {
        public:
            static __declspec(dllexport) int ringBell ( void ) ;
        } ;
    }

RingBell.cpp 包含

#include <iostream>
#include "RingBell.h"
namespace MyNamespace
    {
    int __cdecl MyClass::ringBell ( void )
        {
        std::cout << "\a" ;
        return 0 ;
        }
    }

myPythonClient.py 包含

from ctypes import *
cdll.RingBell[1]() # this invocation works fine
cdll.RingBell.ringBell() # however, this invocation errors out
# AttributeError: function 'ringBell' …

我正在附加特定路径c:\ important\log.txt中的文件

sender = 'poojagupta4112@gmail.com'
receiver = ['shubh4112@gmail.com']
message = """From: From Pooja Gupta <poojagupta4112@gmail.com>
To: To Shubha Goel <shubh4112@gmail.com>
Subject: SMTP e-mail test

This is a test e-mail message.
"""

file_name = 'C:\important\log.txt'
msg=MIMEMultipart()
msg['From'] = sender
msg['To'] = receiver
msg['Subject'] = message
msg['Date'] = email.Utils.formatdate(localtime=True)

# build the attachment
att = MIMEBase('application', 'base64')
att.set_payload(open(file_name, 'rb').read())
email.Encoders.encode_base64(att)
att.add_header('Content-Disposition', 'attachment; filename="%s"' % os.path.basename(file_name))
msg.attach(att)

print 'successfully built attachment'
try:
    session = smtplib.SMTP('smtp.gmail.com',587)
    print 'Starting..'
    session.ehlo()
    print 'ehlo executed..'
    session.starttls()
    print …

问题:我一直在使用Google的Python脚本示例将apk上传到Play商店并获取通过我的帐户发布的应用列表(list_apks.py和upload_apk.py).然而最近它开始打破.我试图通过这样做来更新类似的软件包google-api-python-client,但它没有帮助.oath2clientpip install --update packagename

日志:

这个如果在列出apk的时候:

Determining latest version for my.package.name...
error   25-Feb-2016 06:30:52    Traceback (most recent call last):
error   25-Feb-2016 06:30:52      File "list_apks.py", line 80, in <module>
error   25-Feb-2016 06:30:52        main()
error   25-Feb-2016 06:30:52      File "list_apks.py", line 46, in main
error   25-Feb-2016 06:30:52        credentials = client.SignedJwtAssertionCredentials(
error   25-Feb-2016 06:30:52    AttributeError: 'module' object has no attribute 'SignedJwtAssertionCredentials'
build   25-Feb-2016 06:30:52    Found latest APK version: 
build   25-Feb-2016 06:30:52    Generated …

>import tensorflow

>import tensorflow.contrib

>tensorflow.contrib

module 'tensorflow.contrib' from 'D:\\ProgramData\\Anaconda3\\lib\\site-packages\\tensorflow\\contrib\\__init__.py'

>import tensorflow.python

>tensorflow.python

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: module 'tensorflow' has no attribute 'python'

如您所见,我在cmd(win 10)中运行此代码."import tensorflow.contrib"和"import tensorflow.python"都可以,但命令"tensorflow.contrib"和"tensorflow.python"是不同的.一个返回一个目录,另一个返回AttributeError.

有没有人知道为什么？

python3 无法识别任何 tensorflow 属性

AttributeError: 模块“tensorflow”没有属性“variable_scope”

AttributeError: 模块“tensorflow”没有属性“squared_difference”

已安装张量流

pip3 列表 | grep tensorflow tensorflow 2.0.0
tensorflow-estimator 2.0.1

AttributeErrors我在@property与 python 结合使用时遇到了一个问题__getattr__()：

示例代码：

>>> def deeply_nested_factory_fn():
...     a = 2
...     return a.invalid_attr
...
>>> class Test(object):
...     def __getattr__(self, name):
...         if name == 'abc':
...             return 'abc'
...         raise AttributeError("'Test' object has no attribute '%s'" % name)
...     @property
...     def my_prop(self):
...         return deeply_nested_factory_fn()
...
>>> test = Test()
>>> test.my_prop
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<stdin>", line 5, in __getattr__
AttributeError: 'Test' object …

我在数据帧dtype中有一个列'delta':timedelta64 [ns],通过从另一个日期转包一个日期来计算.我试图通过使用此代码返回浮动天数:

from datetime import datetime
from datetime import date
df['days'] = float(df['delta'].days)

但是我收到这个错误:

AttributeError: 'Series' object has no attribute 'days'

有什么想法吗？

我正在尝试掌握SciPy，但是Unknown property density即使我从SciPy官方文档中复制了整个代码，也仍然遇到错误。

这部分工作正常：

x = np.linspace(norm.ppf(0.01), norm.ppf(0.99), 100)
ax.plot(x, norm.pdf(x), 'r-', lw=5, alpha=0.6, label='norm pdf')

rv = norm()
ax.plot(x, rv.pdf(x), 'k-', lw=2, label='frozen pdf')

r = norm.rvs(size=1000)

但是以下部分给我AttributeError: Unknown property density：

ax.hist(r, density=True, histtype='stepfilled', alpha=0.2)
ax.legend(loc='best', frameon=False)
plt.show()

当我运行我的代码时，我收到以下错误消息。

Traceback (most recent call last):
  File "C:/Users/user/PycharmProjects/MyDevWork/PygamesRelated/game_1.py", line 29, in <module>
    elif event.key == pygame.K_s:
AttributeError: 'Event' object has no attribute 'key'

这是我的代码：

import pygame

pygame.init()

screen = pygame.display.set_mode((720, 480))
clock = pygame.time.Clock()
FPS = 60

BLACK = (0, 0, 0)
WHITE = (255, 255, 255)

rect = pygame.Rect((0, 0), (32, 32))
image = pygame.Surface((32, 32))
image.fill(WHITE)

while True:
    clock.tick(FPS)

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            quit()

        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_w:
                rect.move_ip(0, -2) …

如果您的问题作为此问题的重复项而被关闭，那是因为您有一些通用形式的代码

x = X()
# later...
x = x.y()
# or:
x.y().z()

其中X是某种类型，它提供了y旨在z变异（修改）对象（X类型的实例）的方法。这可以适用于：

• 可变的内置类型，例如list、dict和setbytearray
• 标准库（尤其是 Tkinter 小部件）或第三方库提供的类。