我有几个文件在Excel中打开时看起来是一样的,但是只有一些文件可以用xlrd正确地读取。下面是代码:
import xlrd
book = xlrd.open_workbook(path)
sheet = book.sheet_by_index(0) # only 1 sheet in the file
for i in range(0, sheet.nrows):
line = sheet.row_values(i)
print line
...
为了获得好的文件,这是打印出来的:
[u'ATP', u'Location', u
每次我都会收到以下警告,尽管模块按预期工作:
/usr/local/lib/python3.7/site-packages/grequests.py:21: MonkeyPatchWarning: Monkey-patching ssl after ssl has already been imported may lead to errors, including RecursionError on Python 3.6. It may also silently lead to incorrect behaviour on Python 3.7. Please monkey-patch e
为什么在Python的if语句中不允许赋值?在其他语言中,如c,可以使用此代码。
代码Python:
>>> if x=12:
SyntaxError: invalid syntax
代码C++:
#include <iostream>
using namespace std;
int main(){
if (int x=1)
{
cout<<"ok";
}
}
in for/while语句相同:
>>> while (x=input())!='q':
SyntaxError: in
我用python (2d)为ising模型写了一些代码。除了好的和坏的步骤的数量之外,所有的东西看起来都在正确计算。好的步骤被定义为由于能量变化(d_energy)小于或等于零而改变自旋的步骤。一个糟糕的步骤是,由于随机整数小于e^(-d_energy/(Kb * temp) )的值而改变了自旋,其中kb是boltzman的常量。这里有一个no步,其中d_energy大于0,rand大于e^(我在上面写的)。
当我和一位教授谈到这个问题时,他告诉我,当我把温度调得很高时,错误的步数应该是总步数的一半
from numpy import zeros
from random import choi
我在试着摆脱垃圾包装。试图从apt中删除它会产生这样的结果:
The following packages were automatically installed and are no longer required:
libhsqldb-java-gcj
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
gcj-4.4-base libasound2 libc-bin libc-dev-bin libc6 libc6-dev libc6-i
我试着在我的Mac上为PyPy安装PyGame1.9.1版本。我首先和pypy setup.py install一起运行了pypy config.py。我将配置添加到安装过程中,因为我看到它正在尝试使用普通的python进行配置(它可以正确安装,但会导致导入错误)。在安装过程中,会出现许多警告,例如:
src/overlay.c:44:5: warning: implicit declaration of function 'PyObject_Free' is invalid in C99 [-Wimplicit-function-declaration]
PyObject_F
我有一项任务,从给定的视频中找出糟糕的视觉效果。让我们按照人脑-来定义视频中的坏图像:
Images which don't contain subject in detail,
are too noisy or too many ads and subscription
letter or underexposed
or overexposed could be called as bad images.
The possibilities of bad images could be greater than this, but this
is just getting
我用SWIFT3.0进行了测试。我想将array1添加到array2中,示例和错误如下:
var array1: [String?] = ["good", "bad"]
var array2 = [String!]()
array2.append(array1)
//Cannot convert value of type '[String?]' to expected argument type 'String!'
array2.append(contentsOf: array1)
//Extraneous argument
我有一个关于windowsservercore文件下载的小问题。我在这里列出了一个小的码头形象:
如您所见,有四个类似的Docker文件:基于两个版本的SonarQube容器的两个版本(nanoserver和windowsservercore,通过openjdk映像)
在构建过程中,nanoserver上所需文件的下载进行得很顺利。
然而,在windowsservercore图像上,我遇到了以下问题:
Invoke-WebRequest : The underlying connection was closed: An unexpected error occurred on a send