I have multiple times installed python-nmap following the instructions on their site, but it just doesn't work. Every time I try to test it by doing:
>>> import nmap
>>> nm = nmap.PortScanner()
I get the following error:
Python 2.7.4 (default, Apr 19 2013, 18:28:01)
[GCC 4.7.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import nmap
>>> nm = nmap.PortScanner()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "nmap/nmap.py", line 118, in __init__
p = subprocess.Popen(['nmap', '-V'], bufsize=10000, stdout=subprocess.PIPE)
File "/usr/lib/python2.7/subprocess.py", line 711, in __init__
errread, errwrite)
File "/usr/lib/python2.7/subprocess.py", line 1308, in _execute_child
raise child_exception
OSError: [Errno 2] No such file or directory
All help is greatly appreciated. Thanks in advance.
This error is fixed if you install a later version of nmap for python 2.*
Follow the link here: http://nmap.org/book/inst-macosx.html
You need to install nmap by the looks of it
Related
I am using Python 2.7.14 on windows 10 64bit. I need to use
subprocess.call
but it is failing everytime if I will not pass shell=True. As per the python doc, shell=True should not be used. Also I want to know why it is failing.
python
ActivePython 2.7.14.2717 (ActiveState Software Inc.) based on
Python 2.7.14 (default, Dec 15 2017, 16:31:45) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import subprocess
>>> subprocess.call(['date'])
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Python27\lib\subprocess.py", line 168, in call
return Popen(*popenargs, **kwargs).wait()
File "C:\Python27\lib\subprocess.py", line 390, in __init__
errread, errwrite)
File "C:\Python27\lib\subprocess.py", line 640, in _execute_child
startupinfo)
WindowsError: [Error 2] The system cannot find the file specified
But when run with shell=True, it is running fine
>>> subprocess.call(['date'],shell=True)
The current date is: Wed 12/04/2019
Enter the new date: (mm-dd-yy)
I tried on mac too and subprocess.call is running fine without shell=True
Please help.
date is not an executable, but a builtin function of cmd.exe. You cannot use it outside the shell.
I have read that the Raspberry Pi is capable of transmitting FM.
I have downloaded the script and put on the directory "/home/pi/".
Then I have executed following commands in the terminal over putty:
pi#raspberrypi ~ $ sudo python
Python 2.7.3 (default, Mar 18 2014, 05:13:23)
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import PiFm
>>> PiFm.play_sound("left_right.wav")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "PiFm.py", line 7, in play_sound
call(["./pifm", filename])
File "/usr/lib/python2.7/subprocess.py", line 493, in call
return Popen(*popenargs, **kwargs).wait()
File "/usr/lib/python2.7/subprocess.py", line 679, in __init__
errread, errwrite)
File "/usr/lib/python2.7/subprocess.py", line 1259, in _execute_child
raise child_exception
OSError: [Errno 13] Permission denied
I have ensured that the soundfile "left_right.wav" is in the same directory.
I don't know why this error is throwed.
I use Raspbian as OS, if this is revelant...
EDIT: The files used are in this download: http://cdn.makezine.com/make/pifm/PiRadio.zip
Can anyone explain what's happening here? Even built in cmd.exe commands aren't working:
Python 3.4.0 (v3.4.0:04f714765c13, Mar 16 2014, 19:25:23) [MSC v.1600 64 bit (AM
D64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import subprocess
>>> subprocess.call('dir')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "D:\Python34\lib\subprocess.py", line 535, in call
with Popen(*popenargs, **kwargs) as p:
File "D:\Python34\lib\subprocess.py", line 848, in __init__
restore_signals, start_new_session)
File "D:\Python34\lib\subprocess.py", line 1104, in _execute_child
startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the file specified
>>>
To use 'dir', you have to pass shell=True:
>>> import subprocess
>>> subprocess.call('dir', shell=True)
You have to do this because dir is built into the shell itself, it's not a standalone console application. This is also mentioned in the subprocess.Popen documentation:
On Windows with shell=True, the COMSPEC environment variable specifies
the default shell. The only time you need to specify shell=True on
Windows is when the command you wish to execute is built into the
shell (e.g. dir or copy). You do not need shell=True to run a batch
file or console-based executable.
I have installed the new cloudera 5 manager by manual installation
wget http://archive.cloudera.com/cdh5/one-click-install/redhat/6/x86_64/cloudera-cdh-5-0.x86_64.rpm
rpm -ivh cloudera-cdh-5-0.x86_64.rpm
cd /etc/yum.repos.d/
wget http://archive.cloudera.com/cm5/redhat/6/x86_64/cm/cloudera-manager.repo
cd /usr/src
wget http://archive.cloudera.com/cm5/redhat/6/x86_64/cm/5/RPMS/x86_64/oracle-j2sdk1.7-1.7.0+update45-1.x86_64.rpm
rpm -ivh oracle-j2sdk1.7-1.7.0+update45-1.x86_64.rpm
yum -y install cloudera-manager-server cloudera-manager-server-db-2
/etc/init.d/cloudera-scm-server-db stop
/etc/init.d/cloudera-scm-server-db start
/etc/init.d/cloudera-scm-server stop
/etc/init.d/cloudera-scm-server start
I am using the python API to create the cluster...
http://cloudera.github.io/cm_api/docs/python-client/
however I am getting this error
[kshk#localhost ~]$ python
Python 2.7.5 (default, Nov 12 2013, 16:19:08)
[GCC 4.8.2 20131017 (Red Hat 4.8.2-1)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from cm_api.api_client import ApiResource
>>> import socket
>>> cm_host = "192.168.174.190"
>>> api = ApiResource(cm_host, username="admin", password="admin")
>>> cluster = api.create_cluster("clusterD", "CDH5")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.7/site-packages/cm_api-6.0.1-py2.7.egg/cm_api/api_client.py", line 108, in create_cluster
return clusters.create_cluster(self, name, version)
File "/usr/lib/python2.7/site-packages/cm_api-6.0.1-py2.7.egg/cm_api/endpoints/clusters.py", line 34, in create_cluster
data=[apicluster])[0]
File "/usr/lib/python2.7/site-packages/cm_api-6.0.1-py2.7.egg/cm_api/endpoints/types.py", line 141, in call
return ApiList.from_json_dict(ret, method.im_self, ret_type)
File "/usr/lib/python2.7/site-packages/cm_api-6.0.1-py2.7.egg/cm_api/endpoints/types.py", line 419, in from_json_dict
items = [ attr.from_json(resource_root, x) for x in dic[ApiList.LIST_KEY] ]
File "/usr/lib/python2.7/site-packages/cm_api-6.0.1-py2.7.egg/cm_api/endpoints/types.py", line 97, in from_json
return self._atype.from_json_dict(data, resource_root)
File "/usr/lib/python2.7/site-packages/cm_api-6.0.1-py2.7.egg/cm_api/endpoints/types.py", line 286, in from_json_dict
obj._set_attrs(dic, allow_ro=True)
File "/usr/lib/python2.7/site-packages/cm_api-6.0.1-py2.7.egg/cm_api/endpoints/types.py", line 221, in _set_attrs
attr = self._check_attr(k, allow_ro)
File "/usr/lib/python2.7/site-packages/cm_api-6.0.1-py2.7.egg/cm_api/endpoints/types.py", line 234, in _check_attr
(name, self.__class__.__name__))
AttributeError: Invalid property fullVersion for class ApiCluster.
any ideas???
there was an issue with the python cloudera API, after four hours of this post; the API was updated and it works fine now...
I'm trying to install pyquery on Windows and I get the following error when I try to do selects like this d('p:first'). Everything else seems to be working. Any idea what am I missing? This issue happens only on my windows machine, on my MAC works fine.
Python 2.7.3 (default, Apr 10 2012, 23:31:26) [MSC v.1500 32 bit (Intel)] on win
32
Type "help", "copyright", "credits" or "license" for more information.
>>> from pyquery import PyQuery as pq
>>> d = pq("<p></p>")
>>> d('p:first')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Python27\lib\site-packages\pyquery-1.2.4-py2.7.egg\pyquery\pyquery.py
", line 237, in __call__
result = self.__class__(*args, parent=self, **kwargs)
File "C:\Python27\lib\site-packages\pyquery-1.2.4-py2.7.egg\pyquery\pyquery.py
", line 213, in __init__
xpath = self._css_to_xpath(selector)
File "C:\Python27\lib\site-packages\pyquery-1.2.4-py2.7.egg\pyquery\pyquery.py
", line 223, in _css_to_xpath
return self._translator.css_to_xpath(selector, prefix)
File "build\bdist.win32\egg\cssselect\xpath.py", line 188, in css_to_xpath
File "build\bdist.win32\egg\cssselect\xpath.py", line 188, in <genexpr>
File "build\bdist.win32\egg\cssselect\xpath.py", line 208, in selector_to_xpat
h
File "build\bdist.win32\egg\cssselect\xpath.py", line 230, in xpath
File "build\bdist.win32\egg\cssselect\xpath.py", line 272, in xpath_pseudo
File "C:\Python27\lib\site-packages\pyquery-1.2.4-py2.7.egg\pyquery\cssselectp
atch.py", line 19, in xpath_first_pseudo
xpath.add_post_condition('position() = 1')
AttributeError: 'XPathExpr' object has no attribute 'add_post_condition'
>>>
I had installed pyquery with "easy_install pyquery" and this was causing this error.
I removed it and then installed it from https://github.com/gawel/pyquery with python setup.py install and now it's working.