大约有 19,000 项符合查询结果(耗时:0.0599秒) [XML]

https://stackoverflow.com/ques... 

Python module for converting PDF to text [closed]

...ed with the following: >>> import pdfminer >>> pdfminer.__version__ '20100213' Here's the updated version (with comments on what I changed/added): def pdf_to_csv(filename): from cStringIO import StringIO #<-- added so you can copy/paste this to try it from pdfminer....
https://stackoverflow.com/ques... 

$_POST vs. $_SERVER['REQUEST_METHOD'] == 'POST'

Some guy called one of my Snipplr submissions "crap" because I used if ($_SERVER['REQUEST_METHOD'] == 'POST') instead of if ($_POST) ...
https://stackoverflow.com/ques... 

How to pretty-print a numpy.array without scientific notation and with given precision?

... You can use set_printoptions to set the precision of the output: import numpy as np x=np.random.random(10) print(x) # [ 0.07837821 0.48002108 0.41274116 0.82993414 0.77610352 0.1023732 # 0.51303098 0.4617183 0.33487207 0.7116209...
https://stackoverflow.com/ques... 

How to watch for array changes?

...ods or the length property). function ObservableArray(items) { var _self = this, _array = [], _handlers = { itemadded: [], itemremoved: [], itemset: [] }; function defineIndexProperty(index) { if (!(index in _self)) { Object.defineProperty...
https://stackoverflow.com/ques... 

How to find where a method is defined at runtime?

... Fixnum(Perpetrator)#crime> If you're on Ruby 1.9+, you can use source_location require 'csv' p CSV.new('string').method(:flock) # => #<Method: CSV#flock> CSV.new('string').method(:flock).source_location # => ["/path/to/ruby/1.9.2-p290/lib/ruby/1.9.1/forwardable.rb", 180] Note ...
https://stackoverflow.com/ques... 

What does the “yield” keyword do?

...ou create the method of the node object that will return the generator def _get_child_candidates(self, distance, min_dist, max_dist): # Here is the code that will be called each time you use the generator object: # If there is still a child of the node object on its left # AND if the d...
https://stackoverflow.com/ques... 

What is the best way to implement nested dictionaries?

...getting this behavior, here's how to shoot yourself in the foot: Implement __missing__ on a dict subclass to set and return a new instance. This approach has been available (and documented) since Python 2.5, and (particularly valuable to me) it pretty prints just like a normal dict, instead of the u...
https://stackoverflow.com/ques... 

Event system in Python

...he same, but uses a set instead of a list to store the bag, and implements __call__ which are both reasonable additions. PyNotify is similar in concept and also provides additional concepts of variables and conditions ('variable changed event'). Homepage is not functional. axel is basically a bag-o...
https://stackoverflow.com/ques... 

Get a filtered list of files in a directory

... Keep it simple: import os relevant_path = "[path to folder]" included_extensions = ['jpg','jpeg', 'bmp', 'png', 'gif'] file_names = [fn for fn in os.listdir(relevant_path) if any(fn.endswith(ext) for ext in included_extensions)] I prefer this ...
https://stackoverflow.com/ques... 

How to print a int64_t type in C

C99 standard has integer types with bytes size like int64_t. I am using the following code: 6 Answers ...