我正在尝试将networkx与Python一起使用.当我运行此程序时,它会收到此错误.有什么遗漏？
#!/usr/bin/env python
import networkx as nx
import matplotlib
import matplotlib.pyplot
import matplotlib.pyplot as plt
G=nx.Graph()
G.add_node(1)
G.add_nodes_from([2,3,4,5,6,7,8,9,10])
#nx.draw_graphviz(G)
#nx_write_dot(G, 'node.png')
nx.draw(G)
plt.savefig("/var/www/node.png")
Traceback (most recent call last):
File "graph.py", line 13, in <module>
nx.draw(G)
File "/usr/lib/pymodules/python2.5/networkx/drawing/nx_pylab.py", line 124, in draw
cf=pylab.gcf()
File "/usr/lib/pymodules/python2.5/matplotlib/pyplot.py", line 276, in gcf
return figure()
File "/usr/lib/pymodules/python2.5/matplotlib/pyplot.py", line 254, in figure
**kwargs)
File "/usr/lib/pymodules/python2.5/matplotlib/backends/backend_tkagg.py", line 90, in new_figure_manager
window = Tk.Tk()
File "/usr/lib/python2.5/lib-tk/Tkinter.py", line 1650, in __init__
self.tk = _tkinter.create(screenName, baseName, className, interactive, wantobjects, useTk, …我正在尝试使用c ++从stdin读取,使用此代码
#include <iostream>
using namespace std;
int main() {
while(cin) {
getline(cin, input_line);
cout << input_line << endl;
};
return 0;
}
当我编译时,我收到此错误..
[root@proxy-001 krisdigitx]# g++ -o capture -O3 capture.cpp
capture.cpp: In function âint main()â:
capture.cpp:6: error: âinput_lineâ was not declared in this scope
任何想法丢失了吗？
我是django的新手,我想制作一个简单的表格,根据我可以使用django的表格模块制作表格的文档
from django import forms
class CronForm(forms.Form):
name = forms.CharField(max_length=100)
email = forms.EmailField(required=False, label='Your e-mail address')
message = forms.CharField(widget=forms.Textarea)
def clean_message(self):
message = self.cleaned_data['message']
num_words = len(message.split())
if num_words < 4:
raise forms.ValidationError("Not enough words!")
return message
我想知道的是如何创建一个月的下拉列表,即从1到31？
有些人在他们的表单模板中使用javascript完成它,可以在django中完成吗？
我从数据库函数返回一个字符串或NULL到主程序,有时我从异常中得到这个错误:
basic_string::_S_construct NULL not valid
我认为它是因为从数据库函数返回NULL值？有任何想法吗？？？
string database(string& ip, string& agent){
//this is just for explanation
.....
....
return NULL or return string
}
int main(){
string ip,host,proto,method,agent,request,newdec;
httplog.open("/var/log/redirect/httplog.log", ios::app);
try{
ip = getenv("IP");
host = getenv("CLIENT[host]");
proto = getenv("HTTP_PROTO");
method = getenv("HTTP_METHOD");
agent = getenv("CLIENT[user-agent]");
if (std::string::npos != host.find(string("dmnfmsdn.com")))
return 0;
if (std::string::npos != host.find(string("sdsdsds.com")))
return 0;
if (method=="POST")
return 0;
newdec = database(ip,agent);
if (newdec.empty())
return 0;
else {
httplog << "Redirecting to splash page for user IP: …我有一个包含以下格式数据的文件:
1351649601.045 421 2945
1351649601.684 1036 28591
1351649603.310 128 1620
1351649603.413 93 0
1351649603.375 132 1762
1351649603.318 218 1761
1351649603.434 412 176
1351649603.441 520 5780
1351649603.480 565 11070
1351649603.556 644 11535
gnuplot> set term png
Terminal type set to 'png'
gnuplot> set output "output.png"
gnuplot> plot "data.txt" using 1:2 with lines
但是,gnuplot无法正确读取日期.你有什么想法？
解决了:
set term png xffffff
set output "output.png"
set size 17,17
set title "HTTP payload size and response time"
set style data fsteps
set xlabel "Date"
set timefmt …我使用ftplib连接到ftp站点.我想获取最近上传的文件并下载它.我能够连接到ftp服务器并列出文件,我也将它们放在一个列表中并获得datefield转换.是否有任何功能/模块可以获取最近的日期并从列表中输出整行？
#!/usr/bin/env python
import ftplib
import os
import socket
import sys
HOST = 'test'
def main():
try:
f = ftplib.FTP(HOST)
except (socket.error, socket.gaierror), e:
print 'cannot reach to %s' % HOST
return
print "Connect to ftp server"
try:
f.login('anonymous','al@ge.com')
except ftplib.error_perm:
print 'cannot login anonymously'
f.quit()
return
print "logged on to the ftp server"
data = []
f.dir(data.append)
for line in data:
datestr = ' '.join(line.split()[0:2])
orig-date = time.strptime(datestr, '%d-%m-%y %H:%M%p')
f.quit()
return
if __name__ == '__main__':
main() …我试图使用python pyes模块将具有6M记录的csv文件索引到elasticsearch,代码逐行读取记录并将其推送到elasticsearch ...任何想法如何将其作为批量发送？
import csv
from pyes import *
import sys
header = ['col1','col2','col3','col3', 'col4', 'col5', 'col6']
conn = ES('xx.xx.xx.xx:9200')
counter = 0
for row in reader:
#print len(row)
if counter >= 0:
if counter == 0:
pass
else:
colnum = 0
data = {}
for j in row:
data[header[colnum]] = str(j)
colnum += 1
print data
print counter
conn.index(data,'accidents-index',"accidents-type",counter)
else:
break
counter += 1
我正在使用下面的maven配置构建一个war应用程序文件,但是当我在tomcat中启动应用程序时,Context Root被设置为"/CommerceApi-0.0.1-SNAPSHOT/"
我希望将其设置为"/ api",
任何想法？,下面是pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>CommerceApi</groupId>
<artifactId>CommerceApi</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<build>
<sourceDirectory>src</sourceDirectory>
<resources>
<resource>
<directory>src</directory>
<excludes>
<exclude>**/*.java</exclude>
</excludes>
</resource>
</resources>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>2.6</version>
<configuration>
<warSourceDirectory>WebContent</warSourceDirectory>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.13</version>
</dependency>
<dependency>
<groupId>CommerceApiCommon</groupId>
<artifactId>CommerceApiCommon</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
</dependencies>
</project>
我一直在尝试了解系统调用，并想了解 set_tid_address 的工作原理。从我读到的基本上来说，它返回所执行的程序或进程的pid。
我已经用 ls 对此进行了测试，但是对于某些命令（例如 uptime、top 等），我没有看到使用 set_tid_address 。这是为什么？
我正在实施双向SSL身份验证,然后通过Kerberos进行额外身份验证,然后通过反向代理将用户重定向到内部服务器.
即:
SSL auth <--> Apache Server + kerberos auth using login/password <--reverse proxy-->> internal server
此设置目前有效:
现在我的想法是使用这个配置,因为我可以通过Tornado控制用户的行为
SSL auth <--> Apache server <---> Tornado webserver for kerberos auth <---> reverse proxy <---> internal server
我已经获得了SSL身份验证和Kerberos身份验证.
但是,如何告诉Tornado反向proxy(apache)内部服务器？