tbschema.json looks like this: I load it using following code Why does the schema elements gets sorted, when I want the elements in the same order as they appear in the JSON. The data type integer has been converted into StringType after the JSON has been derived, how do I retain the datatype. Answer Why does the schema elements gets
python re.sub newline multiline dotall
I have this CSV with the next lines written on it (please note the newline /n): I am trying to delete all that commas and putting the address one row up. Thus, on Python I am using this: As far as I know, re.multiline and re.dotall are necessary to fulfill /n needs. I am using re.compile because it is the
Python: Print a variable’s name and value?
When debugging, we often see print statements like these: How can write a function that will take a variable or name of a variable and print its name and value? I’m interested exclusively in debugging output, this won’t be incorporated into production code. Answer You can just use eval: Or more generally (which actually works in the context of the
how to multiply pandas dataframe with numpy array with broadcasting
I have a dataframe of shape (4, 3) as following: I want to multiply each column of the dataframe with a numpy array of shape (4,): In numpy, the following broadcasting trick works: However, it doesn’t work in the case of pandas dataframe, I get the following error: Any suggestions? Answer I find an alternative way to do the multiplication
How to retrieve steam market price history?
I’m trying to get price history for items on steam market. I found a link that returns price history for a specific item (which is mentioned in almost every question about getting price history from market at this site). http://steamcommunity.com/market/pricehistory/?country=PT¤cy=3&appid=730&market_hash_name=Falchion%20Case It works fine in browser while I’m logged-in in Steam, but when I try to do the same thing in
BeautifulSoup – search by text inside a tag
Observe the following problem: For some reason, BeautifulSoup will not match the text, when the <i> tag is there as well. Finding the tag and showing its text produces Right. According to the Docs, soup uses the match function of the regular expression, not the search function. So I need to provide the DOTALL flag: Alright. Looks good. Let’s try
How can I compare files quicker in Python?
Is there any way to make this script faster? I’m using one file to compare another file to print lines, if second column are equal. Input example (for both files): The command line below works equally for same purpose in bash: How can I improve this Python script? Answer If you store your lines in dictionaries that are keyed by
PyCharm can’t find reference in PyGame __init__.py?
OK, I’m very new to coding, and I am just learning Python. I figured I would start with some basic Pygame exercises to try to have something to program. I’ve installed Python 3.4.3 and PyCharm. I also installed the Pygame executable “pygame-1.9.2a0-hg_5974ff8dae3c+.win32-py3.4.msi” from here: https://bitbucket.org/pygame/pygame/downloads I ran the Pygame installer, and it seemed to complete without visible issues, though there
Django – When button is clicked I want to change the dictionary content
On my html page I have a button, and a number being displayed. I want the number to increase by 1 every time the button is pressed. This is the code that I have so far, but for some it doesn’t work. mypage.html views.py Answer On every request a new instance of the python script is run which would result
How to write to PLC input registers using pymodbus
I want to write to PLC input registers using pymodbus. I am able to read them : But I still did not found any way how to write any value to them. I appreciate any help. Thanks. Answer Input registers are read-only. You can write to holding registers, using Modbus functions Write Single Register or Write Multiple Registers (ModbusTcpClient.write_register or