python-2.7

问题 So I'm tackling this machine-learning problem (from a previous Kaggle competition for practice: https://www.kaggle.com/c/nyc-taxi-trip-duration) and I'm trying to use XGBoost but getting an error which I have no clue how to tackle. I searched on google and stack overflow but couldn't find anyone with a similar problem. I'm using python 2.7 with the Spyder IDE through Anaconda and I'm on Windows 10. I did have some trouble installing the xgboost package so I won't completely erase the idea

问题 In python 3 the following set of codes works, I wonder why in python 2.7 it gives me a TypeError: unbound method add() must be called with calc instance as first argument(got int instance instead)? how do I resolve this in Python 2.7? class calc: def add(x,y): answer = x + y print(answer) def sub(x,y): answer = x - y print(answer) def mult(x,y): answer = x * y print(answer) def div(x,y): answer = x / y print(answer) calc.add(5, 7) 回答1: Use staticmethod for python2.7 in your case class calc:

问题 I am trying to open a pdf file, print the file, and close Adobe Acrobat in Python 2.7. import os fd = os.startfile("temp.pdf", "print") os.close(fd) After running the code, I get the following error on the os.close(fd) line: TypeError: an integer is required 回答1: Here's the solution that I came up with: os.startfile("temp.pdf", "print") sleep(5) for p in psutil.process_iter(): #Close Acrobat after printing the PDF if 'AcroRd' in str(p): p.kill() 来源： https://stackoverflow.com/questions

问题 I am trying to open a pdf file, print the file, and close Adobe Acrobat in Python 2.7. import os fd = os.startfile("temp.pdf", "print") os.close(fd) After running the code, I get the following error on the os.close(fd) line: TypeError: an integer is required 回答1: Here's the solution that I came up with: os.startfile("temp.pdf", "print") sleep(5) for p in psutil.process_iter(): #Close Acrobat after printing the PDF if 'AcroRd' in str(p): p.kill() 来源： https://stackoverflow.com/questions

问题 I would like to read Windows' event log. I am not sure if it's the best way but I would like to use the pywin32 -> win32evtlog module to do so. First and foremost is it possible to read logs from Windows 7 using this library and if so how to read events associated with applications runs (running an .exe must leave a trace in the event log in windows i guess). I have managed to find some little example on the net but it's not enough for me and the documentation isn't well written unfortunately

问题 I would like to read Windows' event log. I am not sure if it's the best way but I would like to use the pywin32 -> win32evtlog module to do so. First and foremost is it possible to read logs from Windows 7 using this library and if so how to read events associated with applications runs (running an .exe must leave a trace in the event log in windows i guess). I have managed to find some little example on the net but it's not enough for me and the documentation isn't well written unfortunately

问题 i have both 2.7 as well as 3.6.5 installed , at first in ubuntu 18.04 the only python version available was 3.6 but after i installed numpy package, along with it 2.7 got installed as well and it turned into default. Is there any solution so as to make 3.6 the default one instead of 2.7?? 回答1: Open .bashrc file nano ~/.bashrc . Type alias python=python3 on to a new line at the top of the file then save and close the file with ctrl+o and ctrl+x . 来源： https://stackoverflow.com/questions

问题 i have both 2.7 as well as 3.6.5 installed , at first in ubuntu 18.04 the only python version available was 3.6 but after i installed numpy package, along with it 2.7 got installed as well and it turned into default. Is there any solution so as to make 3.6 the default one instead of 2.7?? 回答1: Open .bashrc file nano ~/.bashrc . Type alias python=python3 on to a new line at the top of the file then save and close the file with ctrl+o and ctrl+x . 来源： https://stackoverflow.com/questions

问题 i have both 2.7 as well as 3.6.5 installed , at first in ubuntu 18.04 the only python version available was 3.6 but after i installed numpy package, along with it 2.7 got installed as well and it turned into default. Is there any solution so as to make 3.6 the default one instead of 2.7?? 回答1: Open .bashrc file nano ~/.bashrc . Type alias python=python3 on to a new line at the top of the file then save and close the file with ctrl+o and ctrl+x . 来源： https://stackoverflow.com/questions

问题 So I have Selenium code that goes to a page using chrome. Now at that page, there is this HTML; <span ngbind="pageData.Message">Heloooo</span> How can I get the value using python and Selenium? So only the Heloooo . Thanks! 回答1: You can use the following CSS Selector for locating the element: span[ngbind='pageData.Message'] Code: element = driver.find_element_by_css_selector("span[ngbind='pageData.Message']") print(element.text) # Will print the "Heloooo" value. Hope it helps you! 回答2: You