Appending lines for existing file in python [duplicate]
The issue is in the code - curr_file = open('myfile',w) curr_file.write('hello world') curr_file.close() The second argument should be a string, which indicates the mode in which the file should be openned, you should use a which indicates append . curr_file = open('myfile','a') curr_file.write('hello world') curr_file.close() w mode indicates write ,...
python - how to properly evaluate a value from a system command
You need to use subprocess.check_output: mycat = int(subprocess.check_output(cmd, shell=True)) ...
Python - Terminate Child Process or PID?
Yes, it's a variable scoping issue. py_process doesn't exist on your subsequent invocations of exec_menu (after you have set it in the choice=='1'). Make it global and then it will be available when you want to stop....
Python: Exiting python.exe after Popen?
If you want to first communicate to the started process and then leave it alone to run further, you have a few options: Handle SIGPIPE in your long-running process, do not die on it. Live without stdin after the launcher process exits. Pass whatever you wanted using arguments, environment, or...
'unicode' object has no attribute 'get' Django beginner
django,python-2.7,django-forms
Your post method is returning the result of reverse, which is a string, ie the URL. You actually need to return a redirect response. The redirect shortcut can do this for you directly: from django.shortcuts import redirect ... def post(self, request, *args, **kwargs): ... return redirect('detail_pasta', hash=item.url) ...
Benefit of using os.mkdir vs os.system(“mkdir”)
Correctness Think about what happens if your directory name contains spaces: mkdir hello world ...creates two directories, hello and world. And if you just blindly substitute in quotes, that won't work if your filename contains that quoting type: 'mkdir "' + somedir + '"' ...does very little good when somedir...
Stopping list selection in Python 2.7
You can simply filter the tuples from the list as a generator expression and then you can stop taking the values from the generator expression when you get the first tuple whose second element is -1, like this >>> s = [(0,-1), (1,0), (2,-1), (3,0), (4,0), (5,-1), (6,0), (7,-1)] >>>...
Operational error while using stripe with profile app
django,python-2.7,django-templates,stripe-payments
It's kind of weird. But when I followed "No Such Table error" and tested DB it was still empty. So this time I deleted DB but also migrations. Problem is fixed and its just working fine.
Compare 2 seperate csv files and write difference to a new csv file - Python 2.7
What do you mean by difference? The answer to that gives you two distinct possibilities. If a row is considered same when all columns are same, then you can get your answer via the following code: import csv f1 = open ("olddata/file1.csv") oldFile1 = csv.reader(f1) oldList1 = [] for row...
Return html code of dynamic page using selenium
python,python-2.7,selenium,selenium-webdriver,web-scraping
You need to explicitly wait for the search results to appear before getting the page source: from selenium import webdriver from selenium.webdriver.support.wait import WebDriverWait from selenium.webdriver.common.by import By from selenium.webdriver.support import expected_conditions as EC wd = webdriver.Firefox() wd.get("https://www.leforem.be/particuliers/offres-emploi-recherche-par-criteres.html?exParfullText=&exPar_search_=true& exParGeographyEdi=true") wd.switch_to.frame("cible") wait = WebDriverWait(wd, 10)...
Data parsing, the pythonic way
What is best depends on how much data you have to process. Half the problem in this case is that the data retrieval and the printing are all jumbled up. Unless you are working with really large amounts of data it is advisable to split them up. If the data...
Problems with MySQLdb python
python,python-2.7,tkinter,mysql-python
Like Bryan said, that may be the issue with your code, instead of making the button call conn.getConnection() directly, try an approach, where you save the entry variables into 'self' and then when the button is invoked, you create the connection at that time. The code would look something like...
wxPython: Dynamically Flow Buttons to Next Row on Window-Resize
What you are looking for is the wx.WrapSizer. I updated your code a bit to use it instead: import wx words = ['lorem', 'ipsum', 'dolor', 'sit', 'amet', 'consectetur', 'adipisicing', 'elit', 'sed', 'do', 'eiusmod', 'tempor', 'incididunt', 'ut', 'labore', 'et', 'dolore', 'magna', 'aliqua', 'ut', 'enim', 'ad', 'minim', 'veniam', 'quis', 'nostrud', 'exercitation', 'ullamco',...
How to check for multiple attributes in a list
You can create a set holding the different IDs and then compare the size of that set to the total number of quests. The difference tells you how many IDs are duplicated. Same for names. Something like this (untested): def test_quests(quests): num_total = len(quests) different_ids = len(set((q.ID for q in...
Import on class instanciation
It is possible to import a module at instantiation: class SpecificClassThatNeedRandomModule(object): def __init__(self): import randomModule self.random = randomModule.Random() However, this is a bad practice because it makes it hard to know when the import is done. You might want to modify your module so that it doesn't raise an exception,...
Compare 2 csv files and output different rows to a 3rd CSV file using Python 2.7
You're currently checking for rows that exist in the old file but aren't in the new file. That's not what you want to do. Instead, you should check for rows that exist in the the new file, but aren't in the new one: output = [row for row in newList2...
delete data from mysql table based on multiple conditions
Delete from table_xyz where right(lower(source),4) not in ('.txt','.xls','xlsx') ...
'ls' is not recognized in Anaconda Python 2.7 Spyder
ls is a *nix command, and is not installed under Windows by default. Use dir and its appropriate options instead.
How to find Unused Security Groups of all AWS Security Groups?
python-2.7,amazon-web-services,amazon-ec2,amazon-s3,boto
This is a slightly difficult request because Security Groups are used by many different resources, including: Amazon EC2 instances Amazon RDS instances VPC Elastic Network Interfaces (ENIs) Amazon Redshift clusters Amazon ElastiCache clusters Amazon Elastic MapReduce clusters Amazon Workspaces ...and most probably other services, too To obtain a list of...
Iterate over all links/sub-links with Scrapy run from script
python,windows,python-2.7,web-scraping,scrapy
Your spider is being blocked from visiting pages after the start page by your allowed_domains specification. The value should include just the domain, not the protocol. Try allowed_domains = ["www.WebStore.com"] Also the line desc_out = Join() in your WebStoreItemLoader definition may give an error as you have no desc field....
How to find longest consistent increment in a python list?
One problem (but not the only one) with your code is that you are always adding the elements to the same possible_list, thus the lists in bigger_list are in fact all the same list! Instead, I suggest using [-1] to access the last element of the list of subsequences (i.e....
Identifying the nearest grid point
You can use numpy.searchsorted for this: import numpy as np lat=np.linspace(15,30,61) long=np.linspace(91,102,45) def find_index(x,y): xi=np.searchsorted(lat,x) yi=np.searchsorted(long,y) return xi,yi thisLat, thisLong = find_index(16.3,101.6) print thisLat, thisLong >>> 6, 43 # You can then access the `data` array like so: print data[thisLat,thisLong] NOTE: This will find the index of the lat and...
iterate using yield of a dictionary of dictionaries
You forgot to recursively yield. for k,d in dict.items(directories): for e in walk_directory_files(d): yield e Note that Python 3.3 adds additional syntax specifically for this: for k,d in dict.items(directories): yield from walk_directory_files(d) # Python 3.3+ only! ...
Anaconda site-packages
python,python-2.7,pip,anaconda
You can import the module and check the module.__file__ string. It contains the path to the associated source file.
How to create dict from date (in strings) range? [duplicate]
Try something like the below code to generate the keys - from datetime import datetime as dt, timedelta as td start = '2015-01-01' end = '2015-03-23' sd = dt.strptime(start,'%Y-%m-%d') ed = dt.strptime(end,'%Y-%m-%d') delta = ed - sd for i in range(delta.days+1): dict[sd + td(days=i)] = <something> ...
How to specify string variables as unicode strings for pattern and text in regex matching?
simply use re.match(myregex.decode('utf-8'), mytext.decode('utf-8')) ...
lambda for RDD query with if statement
Maybe filter will help? badRecords = access_logs.filter(lambda log: log.response_code == 404) I think the problem with the way you wrote it is: When using map, you can't drop rows, every row is mapped to some other row. So there is no "pass" and the number of rows will not change....
Replacing string in script from another script
The following replaceString.py should do it: with open('script.py') as myFile: content = myFile.readlines() with open('script.py', 'w') as myFile: for line in content: newLine = line.replace("string1 = 'OriginalValue'", "string1 = 'newValue'") myFile.write(newLine) ...
How to skip a function
If I you're asking what I think you're asking, then yes. In fact, that's the whole point. Functions are sections of reusable code that you define first (they don't run when they're defined!) and then you call that function later. For example, you can define a function, helloworld like this:...
Python split by comma delimiter and strip
I think you want this: for line in lines: for value in line.split(','): value = value.strip() Hope it helps....
random.randint not generating random values
You seem to be confused between defining a function and calling it and how parameters work. def blackjack(A,B): print "Welcome to Blackjack!" print "Your cards are",name[A-1],"&",name[B-1] total = value[A-1] + value[B-1] print "Your card total is",total In your function A and B are place holders. They will be replaced by...
How to print words from a word list that have 5 letters or less Python 2.7?
WORDS = txt.splitlines() WORDS_5_or_less = list(filter(lambda x: len(x) <= 5, WORDS)) then just pick from WORDS_5_or_less instead of WORDS...
Zero out portion of multidim numpy array
python-2.7,image-processing,numpy
Use array slicing. If xmin, xmax, ymin and ymax are the indices of area of the array you want to set to zero, then: a[xmin:xmax,ymin:ymax,:] = 0. ...
Who calls the metaclass
You can find the answer relatively easily. First, lets find the opcode for building a class. >>> def f(): class A(object): __metaclass__ = type >>> import dis >>> dis.dis(f) 2 0 LOAD_CONST 1 ('A') 3 LOAD_GLOBAL 0 (object) 6 BUILD_TUPLE 1 9 LOAD_CONST 2 (<code object A at 0000000001EBDA30, file...
Python: Non repeating random values from list [duplicate]
python,string,python-2.7,random
you can use random.sample() random.sample(population, k) Return a k length list of unique elements chosen from the population sequence. Used for random sampling without replacement. In [13]: "+".join(random.sample(sentences,3)) Out[13]: 'a+b+c' ...
SSLV3_ALERT_HANDSHAKE_FAILURE with SNI using Tornado 4.2 in Python 2.9.10
python,python-2.7,ssl,tornado,sni
It is very hard to tell without having ore information about the server, but I'll try: OpenSSL 0.9.8zd 8 Jan 2015 context = ssl.SSLContext(ssl.PROTOCOL_TLSv1) You are restricting the protocol to TLS 1.0. It might be that the server expects TLS 1.2 or TLS 1.1 or SSL 3.0. Note that TLS...
Pandas Dataframe Complex Calculation
python,python-2.7,pandas,dataframes
I believe the following does what you want: In [24]: df['New_Col'] = df['ActualCitations']/pd.rolling_sum(df['totalPubs'].shift(), window=2) df Out[24]: Year totalPubs ActualCitations New_Col 0 1994 71 191.002034 NaN 1 1995 77 2763.911781 NaN 2 1996 69 2022.374474 13.664692 3 1997 78 3393.094951 23.240376 So the above uses rolling_sum and shift to generate the...
Syntax Error (FROM) in Python, I do not want to use it as function but rather use it as to print something
print getattr(i, 'from').username ...
Python root logger messages not being logged via handler configured with fileConfig
python,python-2.7,logging,configuration-files
A potential problem is that you are importing the module before you set up the logger configuration. That way, the module requests a logger before the logging is setup. Looking a fileConfig()'s documentation, the reason subsequent logging to the pre-obtained loggers fails is the default value for its disable_existing_loggers argument:...
What is the difference between <> and == in python?
The operator "<>" means 'not equal to', and the operator "==" means 'equal to'. The former evaluates to true if two things being compared are not equal, and the latter evaluates to true if two things being compared are equal. http://www.tutorialspoint.com/python/comparison_operators_example.htm...
Open a file from user input in python 2.7
python,python-2.7,user-interface,user-input
The issue is in the lines - selectfile = file(raw_input("Enter Filename: "), 'r') with open(selectfile, 'r') as inF: You need to open the filename (which is inputted from user) directly, as below - with open(raw_input("Enter Filename: "),'r') as inF: Also, there seems to be an indentation issue in your code,...
python class factory inherit random parent
python,python-2.7,inheritance,factory
In my original answer (which I deleted because it was just plain wrong) I said I would consider doing it like this: class RandomPerson(Person): def __init__(self): rand_person = random.choice((John, Kyle))() self.__dict__ = rand_person.__dict__ This way is an adaptation of the Python Borg idiom; the idea was that everything that matters...
Use NamedTemporaryFile to read from stdout via subprocess on Linux
python-2.7,subprocess,temporary-files
Unless stdout=PIPE; p[0] will always be None in your code. To get output of a command as a string, you could use check_output(): #!/usr/bin/env python from subprocess import check_output result = check_output("date") check_output() uses stdout=PIPE and .communicate() internally. To read output from a file, you should call .read() on the...
Pass function call as a function argument
The functions are returning tuples, because return only gives back one item. You can "unpack" the tuple returned by prepending it with an asterisk. The syntax will look like this: print function1(*function2(1,2)) ...
Is there a way to say for every x values, do this?
If you do lst[<start>:<end>] it would give the elements from <start> index (not value) inclusive, to <end> (end index) exclusive. An example might be able to explain this better - >>> lst = [1,2,3,4,5,6,7,8,9,10] >>> lst[0:5] [1, 2, 3, 4, 5] >>> lst[5:10] [6, 7, 8, 9, 10] Additionally, if...
How can I detect a URL really exists despite a 301 or 302 redirect?
Use the steps outlined in diveintopython (copied and slightly cleaned bellow) if you want to use stdlib only. Otherwise, use something more nuanced (like Mechanize) to follow redirects. class SmartRedirectHandler(urllib2.HTTPRedirectHandler): def http_error_301(self, req, fp, code, msg, headers): result = urllib2.HTTPRedirectHandler.http_error_301( self, req, fp, code, msg, headers) result.status = code return...
Parse text from a .txt file using csv module
How about using Regular Expression def get_info(string_to_search): res_dict = {} import re find_type = re.compile("Type:[\s]*[\w]*") res = find_type.search(string_to_search) res_dict["Type"] = res.group(0).split(":")[1].strip() find_Status = re.compile("Status:[\s]*[\w]*") res = find_Status.search(string_to_search) res_dict["Status"] = res.group(0).split(":")[1].strip() find_date = re.compile("Date:[\s]*[/0-9]*") res = find_date.search(string_to_search) res_dict["Date"] = res.group(0).split(":")[1].strip() res_dict["description"] =...
RTC to Git Migration using rtc2git - https://github.com/WtfJoke/rtc2git
Python 3.3.5 installation fixed this issue for me. Downloaded from - https://www.python.org/downloads/release/python-335/
how to fetch a column in browse_record_list in orm browse method in openERP
You can access all the fields of that table from the browsable object. id = browse_record.id name = browse_record.name Similarly you can access all the relational tables data as well, like customer in sale order. partner_id = sale_order_object.partner_id.id partner_name = sale_order_object.partner_id.name You can also update tables data through that browsable...
lookbehind for start of string or a character
regex,python-2.7,regex-lookarounds
re.compile(ur"(?:^|(?<=[, ]))(?:next to|near|beside|opp).+?(?=,|$)", re.IGNORECASE) You can club 3 conditions using [] and |.See demo. https://regex101.com/r/vA8cB3/2#python...
Slicing a Python OrderedDict
python-2.7,slice,ordereddictionary
The ordered dict in the standard library, doesn't provide that functionality. Even though libraries existed for a few years before collections.OrderedDict that have this functionality (and provide essentially a superset of OrderedDict): voidspace odict and ruamel.ordereddict (I am the author of the latter package, which a reimplementation of odict in...
