MD mengdiwang
mengdiwang
/ useful_pandas_snippets.py
Created
April 28, 2016 00:48
— forked from bsweger/useful_pandas_snippets.md
Useful Pandas Snippets
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| #List unique values in a DataFrame column | |
| pd.unique(df.column_name.ravel()) | |
| #Convert Series datatype to numeric, getting rid of any non-numeric values | |
| df['col'] = df['col'].astype(str).convert_objects(convert_numeric=True) | |
| #Grab DataFrame rows where column has certain values | |
| valuelist = ['value1', 'value2', 'value3'] | |
| df = df[df.column.isin(value_list)] |
mengdiwang
/ Leetcode Downloader (Feb 2016)
Last active
November 3, 2016 02:00
— forked from antonylhz/Leetcode Downloader (Feb 2016)
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| # Steps To follow to download your leetcode: | |
| #1. Login to leetcode account on your default browser | |
| #2. Get your session Id for leetcode.com from Browser ( for chrome: press F12, Go to Resources, Go to Cookies and copy value of field 'PHPSESSID'; you can find similar value for firefox and other browsers). | |
| #3. Create a folder to save your leetcode codes. | |
| #4. Keep the downloaded leetcode.py into that folder | |
| #5. Replace PHPSESSID field in leetcode.py file with your session ID (copied in step 2) | |
| #6. run file as 'python leetcode.py | |
| #7. wait for all submssions to download. | |
| # Features: |