This is the whole point of defaultdict: you construct one with a callable (in this case, int), and when a key is accessed that doesn’t exist, it will call it (producing 0), and insert it into the dictionary. It auto-creates keys as you access them. solved Python adding elements to dict and to defaultdict [closed]
The answers that others have put forwards helped me to create a program that every time the .py file is called it counts the number of files in the sub-directory and adds it to a file name and creates the file The Code I Used: path, dirs, files = next(os.walk(“C:/xampp/htdocs/addfiles/text/”)) file_count = len(files) save_path=”C:/xampp/htdocs/addfiles/text/” name_of_file=”text” … Read more
You shouldn’t concern yourself about cpu usage when doing disk IO — disk IO is very slow compared to almost any in-memory/cpu operation. There are two strategies to deleting from the middle of a file: writing all lines to keep to a secondary file, then renaming the secondary file to the original file name. copy … Read more
I suspect the indentation/syntax errors are issues with SO and/or lazy copying, as I can replicate your failure example with fixed code: Everything is compared lowercase except the vowels list, which is in all caps. it needs to be aeiou, as A != a and everything else is lowercase. You still have to fix your … Read more
In general case one would parse and write the BDF files with something like the pyNastran. However in this specific case using your approach is not that wrong; though your regular expressions are wrong, though the principle works here. Notice also, you need to use raw strings or escape \ in the paths; the use … Read more
Try: BaseException.__bases__ to get the parent(s). __bases__ attribute will give you a tuple of all the parent classes, in this case the parent is object. And read the docs. 0 solved A little help to understand Class hierarchy of Python? [closed]
I feel like we’ve given the search for pre-existing solutions its due diligence. Given that “<=” is assignment in some languages (e.g., Verilog) we can quite intuitively introduce: value_struct_instance<<=’field’, value as the Pythonic form of value_struct_instance.field = value Here is an updated example for instructive purposes: # Python doesn’t support copy-on-assignment, so we must use … Read more
I told you before, you need to read the documentation and follow the tutorial. This is not the way to set a default value for a model’s field. Please go through the documentation and tutorial at https://docs.djangoproject.com/en/1.5/ If you run into problems during it, come back and ask questions, but if you continue to things … Read more
Jacob, run help on a cmd prompt and you will get a huge list of available commands for you to implement C:\>help For more information on a specific command, type HELP command-name ASSOC Displays or modifies file extension associations. ATTRIB Displays or changes file attributes. BREAK Sets or clears extended CTRL+C checking. BCDEDIT Sets properties … Read more
Not really sure about name recognition. However, if you know the names that you would be looking for it would be easy. You could have a list of all of the names that you’re looking for and check to see if each one is in the string and if so just use string.replace. If the … Read more
zipping names with list_price does most of the work for you: result = [] for name, prices in zip(names, list_price): result.append({“name”: name, “size_price”: prices, “size”: size}) 1 solved Data structure in python 2.7 [duplicate]
Here’s my best crystal ball guess at what you want. The keys of your dictionary are only a and b, which aren’t any characters in HelloWorld, but if you actually had characters from your string as keys like the following, this is how I’d do the replacement, assuming you want to rotate through the four … Read more
Your update2new function definitely returns something: def update2new(src_dest): print(“Hi”) fileProcess(src_dest) os.remove(‘outfile.csv’) os.remove(‘new.csv’) return src_dest But you don’t capture it in your main: def main(): print(“<——Initializing Updating Process——>”) srcFile=”abc_20160301_(file1).csv” update2new(srcFile) #the return is NOT captured here print(‘\nSuccessfully Executed [ {}]……’.format(str(srcFile)),end=’\n’) print (“OK”) Change it to: def main(): print(“<——Initializing Updating Process——>”) srcFile=”abc_20160301_(file1).csv” srcFile = update2new(srcFile) #get the … Read more
Your tabs and spaces must be getting mixed up. Set you editor to 4 spaces for a tab. You can also turn on whitespace indicator on the editor, which can help resolving the indentation errors. solved Python Indentation Error when there is no indent error
Are you trying to import like this: from bs4 import BeautifulSoup If not, try it that way. Hope this helps! (Perhaps you should add your import statement to the question so we can see if there is a problem with the statement or if the issue resides somewhere else) 1 solved cannot import name module … Read more