I want to parse a timestamp from a log file that has been written via
datetime.datetime.now().strftime('%Y%m%d%H%M%S')
and then compute the number of seconds that have passed since this timestamp.
I know I could do it with datetime.datetime.strptime to get back a datetime object and then compute a timedelta. Problem is, the strptime function has been introduced with Python 2.5 and I'm using Python2.4.4 (an upgrade is not possible in my context).
Any easy way to do this?
I know this question may well be the silliest question you've herd today, but to me it is a big question at this stage of my programming learning.
Why is the second empty line needed in this Python code? What does that line do?
print 'Content-Type: text/plain'
print ''
print 'Hello, world!'
How can I protect my web server, if I run custom users code on server. If any user can submit his python source on my server and run it.
Maybe some modules or linux tools for close any network and hardware activity for this script.
Thank's all for help!
So the setup is a slew of proprietary server/client Python applications running on one Linux box (the server) and a set of Windows 7 workstations (the clients). Everything is running smoothly until any of the proprietary Python packages needs updating.
For now I am using distutils eggs which are very easily updated with easy_install, but it is still a manual process which quickly becomes tedious as the number of applications and client workstations grow.
The ideal setup IMHO is to have the Python packages on the server so when a client application is launched on a workstation the client application can check to see whether its current Python packages are up-to-date. If not, the client application should download the newer Python package from the server, install it, and then launch as per normal.
Does this sounds familiar to anyone? I have tried to find alternatives myself, but as far as I can see there is no Python module offering this functionality. Does anyone have any home made solutions for this?
Much like Java (or php), I'm use to seperating the classes to files.
Is it the same deal in Python? plus, how should I name the file?
Lowercase like classname.py or the same like ClassName.py?
Do I need to do something special if I want to create an object from this class or does the fact that it's in the same "project" (netbeans) makes it ok to create an object from it?
Right now I am using an arduino to send data from an analog sensor to COM4. I am trying to make a python script that continuously monitors that data and looks for a certain parameter.
I tried something like this but it isn't outputing the data like I want.
import serial
port = "COM4"
ser = serial.Serial(port,9600, timeout =1)
value = 0
while 1:
value = ser.read()
print value
What Python libraries do folks use for querying Amazon product data? (Amazon Associates Web Service - used to be called E-Commerce API, or something along those lines).
Based on my research, PyAWS (http://pyaws.sourceforge.net/) seems okay, but still pretty raw (and hasn't been updated in a while). Wondering if there's an obvious canonical library that I'm just missing.
When I run some python code in NetBeans, which raises an error, the output in NetBeans just gives an error message and no further information, such as line number. Is there any way to fix that?
Hi,
I need to compare two files and redirect the different lines to third file. I know using diff command i can get the difference . But, is there any way of doing it in python ?
Hi there,
I'm trying to find information on different ways to traverse an object tree in python.
I don't know much about the language in general yet, so any suggestions/techniques would be welcome.
Thanks so much
jml
Is there a way in python to programmatically determine the width of the console? I mean the number of characters that fits in one line without wrapping, not the pixel width of the window.
Edit
Looking for a solution that works on Linux
Hello,
I want to make an executable file (.exe) of my python's application.
I want to know how to do it but have this in mind:
I use a c++ dll!
Do I have to put the dll along side with the .exe or is there some other way?
Thanks in advance!
Can somebody explain to me why this works (in Python 2.5) :
class Foo(object):
pass
class Bar(Foo):
pass
print(Foo.__subclasses__())
but this doesn't :
class Foo():
pass
class Bar(Foo):
pass
print(Foo.__subclasses__())
The latter returns "AttributeError: class Foo has no attribute '__subclasses__'" but i'm not sure why. I know this is related to old-style vs. new-style classes but i'm not clear on why that would make this functionality unavailable.
When I run my python script in the shell terminal, it works
sudo myscript.py --version=22 --base=252 --hosts="{'hostA':[1],'hostB':[22]}"
But when I run in Hudson and Jenkins, using Execute Shell step, somehow, the string --hosts="{'hostA':[1],'hostB':[22]}" is interpreted as
sudo myscript.py --version=22 --base=252 '--hosts="{'hostA':[1],'hostB':[22]}"'
How do we overcome this so that our script would run in Jenkins and Hudson ?
Thank you.
Sincerely
Hello all, I have a python script and am wondering is there any way that I can ensure that the script run's continuously on a remote computer? Like for example, if the script crashes for whatever reason, is there a way to start it up automatically instead of having to remote desktop. Are there any other factors I have to be aware of? The script will be running on a window's machine.
I'm wondering specifically what experienced programmers thought when they started developing in Python. I'm sure the answer depends on your background, but my own personal answer is the conversion of basically anything in the language to a True/False value in boolean contexts.
Resulting in "oddities" like:
if x:
not meaning the same thing as:
if x == True:
I understand why, but it bugs me, and I certainly had to think about it a bit when I first ran into it.
Hello everybody
I'm trying to manually create the file descriptor associated with a socket in python and then loaded directly into memory with mmap. Create a file into memory with mmap is simple, but I can not find a way to associate the file with a socket.
Anyone know how?
thank you very much.
Is there any fast method to make a transposition of a rectangular 2D matrix in Python (non-involving any library import).? Say, if I have an array X=[[1,2,3], [4,5,6]] I need an array Y which should be a transposed version of X, so Y=[[1,4],[2,5],[3,6]].
I have a list L of objects (for what it's worth this is in scons). I would like to create two lists L1 and L2 where L1 is L with an item I1 appended, and L2 is L with an item I2 appended.
I would use append but that modifies the original list.
How can I do this in Python? (sorry for the beginner question, I don't use the language much, just for scons)
I need to share a huge dictionary (around 1 gb in size) between multiple processs, however since all processes will always read from it. I dont need locking.
Is there any way to share a dictionary without locking?
The multiprocessing module in python provides an Array class which allows sharing without locking by setting
lock=false
however There is no such option for Dictionary provided by manager in multiprocessing module.
I want to know how to run a progress bar and some other work simultaneously, then when the work is done, stop the progress bar in Python (2.7.x)
import sys, time
def progress_bar():
while True:
for c in ['-','\\','|','/']:
sys.stdout.write('\r' + "Working " + c)
sys.stdout.flush()
time.sleep(0.2)
def work():
*doing hard work*
How would I be able to do something like:
progress_bar() #run in background?
work()
*stop progress bar*
print "\nThe work is done!"
Hi, I am new to python.
I am trying to extract the text between that has specific text file:
----
data1
data1
data1
extractme
----
data2
data2
data2
----
data3
data3
extractme
----
and then dump it to text file so that
----
data1
data1
data1
extractme
---
data3
data3
extractme
---
Thanks for the help.
What do the bit operators like AND(&),OR(|),XOR(^) in python do behind the screen? What do they calculate? I cannot understand the results they give when used in a program?
30&45 yields 12. How can we relate these three?
30|45 yields 63. How are these three related?
Please answer this...