python-2.7

问题 I am getting an error when trying to run my script. The purpose of my script is to split PDFs based on the bookmarks given to them and move them into specific folders. However I'm getting this error when trying to read the PDF. Traceback (most recent call last): File "I:\Harry\[Scripts]\013 - [Blackstone Changes]\3. Split Invoice & SuppDocs.py", line 280, in <module> split(path, filename) File "I:\Harry\[Scripts]\013 - [Blackstone Changes]\3. Split Invoice & SuppDocs.py", line 115, in split

问题 Recently I stuck for a moment while preparing the raw Sql Query having In clause to it and the In clause data is a python list . Okay Let me put my example here. Sql Query that I wanted sql_query = 'SELECT * FROM student WHERE first_name IN ("Dean");' From the data I was having data = ["Dean"] query = 'SELECT * FROM student WHERE first_name IN %s;' % str(tuple(data)) # result was "SELECT * FROM student WHERE first_name IN ('Dean',) " # see the *Comma* just before close parentheses which is a

问题 I'm trying to fill values in one column from two other columns based on the values in a fourth column. I have a pandas dataframe with four columns: A, B, C, D df_copy = df.copy() for i, row in df.iterrows(): if 'Test' in row.D: df_copy.loc[i, 'A'] = row.B elif 'Other' in row.D: df_copy.loc[i, 'A'] = row.C This works, but is very slow. Is there a more efficient way? 回答1: You can use 'boolean indexing' for this instead of iterating over all rows: df_copy.loc[df['D']=='Test', 'A'] = df['B'] df

问题 I'm trying to fill values in one column from two other columns based on the values in a fourth column. I have a pandas dataframe with four columns: A, B, C, D df_copy = df.copy() for i, row in df.iterrows(): if 'Test' in row.D: df_copy.loc[i, 'A'] = row.B elif 'Other' in row.D: df_copy.loc[i, 'A'] = row.C This works, but is very slow. Is there a more efficient way? 回答1: You can use 'boolean indexing' for this instead of iterating over all rows: df_copy.loc[df['D']=='Test', 'A'] = df['B'] df

问题 This question already has answers here : googletrans stopped working with error 'NoneType' object has no attribute 'group' (10 answers) Closed 2 years ago . Here is the code: # coding: utf-8 from googletrans import Translator translator = Translator() print translator.translate('here', dest='zh-CN') everything goes well before today. But not I try to use this python library. then I got this error. root@localhost:~# python googletest.py Traceback (most recent call last): File "googletest.py",

问题 This question already has answers here : googletrans stopped working with error 'NoneType' object has no attribute 'group' (10 answers) Closed 2 years ago . Here is the code: # coding: utf-8 from googletrans import Translator translator = Translator() print translator.translate('here', dest='zh-CN') everything goes well before today. But not I try to use this python library. then I got this error. root@localhost:~# python googletest.py Traceback (most recent call last): File "googletest.py",

问题 I'm looking at using a X3270 terminal emulator. I have http://x3270.bgp.nu/ looked over this source material and still don't see how to start using the tool or configure it. I'm wonder how I can open a terminal and connect. Another question is how could I integrate this into a python program? edit: here is a snippet: em = Emulator() em.connect(ip) em.send_string('*user name*') em.exec_command('Tab') em.send_string('*user password*') em.send_enter() em.send_enter() em.wait_for_field() em.save

问题 In python, if I have a list say [2,1,1,3,5] , then is it possible to get [2,1,1,3,5].index(1) as 2 i.e first match starting from the higher end instead of the lower? 回答1: Can't say I've ever needed to do this, but you could always hack it with: lst = [2,1,1] reverseindex = len(lst)-1 - lst[::-1].index(1) Note that if you had a STRING, you could do: string = "21135" reverseindex = string.rindex(1) # reverseindex == 2 But lists don't have this function. 回答2: If you don't care about list order

问题 I have a model form defined in my application, and in one of my form fields, I want the users to enter their inputs, but with the first letter of their inputs in capital. If that's not the case, the application should throw an error and prompt the user to re-enter that particular form entry. Is there an in-built Django form validator for implementing such a restriction? PS: I am aware of the capitalize() method provided by ModelForm which stores the form field in database with first letter

问题 I am currently trying to install version 3 of google protocol buffer on windows for python. I have gone to the python folder through the command line and I am attempting to use: python setup.py build however I am getting the following error: python : protoc is not installed nor found in ../src. Please compile it or install the binary package. What's going on here? 回答1: As the error says, you must first install protoc.exe . You can get it from the Win32 package included with every Protobuf