This blog post is a step-by-step tutorial to install Python and Jupyter Notebook to Windows 10 (64 bit). Python 3.3 or greater, or Python 2.7 is required to install the Jupyter Notebook. Download Python 3.7.4 from “https://www.python.org/downloads/release/python-374/” url 2. Choose and select “x86–64 executable installer” for Windows 10–64 bit computer 3. Select location to save the executable… Continue reading Install Python and Jupyter Notebook to Windows 10 (64 bit)
Tag: python
Pandas Transform and Filter
Split Apply Combine Filter Data with Transform Transform with Lambda Filter with Pandas Groupby use Map to create a new Column see more also
فرمت اعداد در پانداس
برای فرمت سه رقم سه رقم جدا شده و نمایش تا دو رقم اعشار در پایتون پانداس از این کد استفاده ببرید. یا این کد برای هر ستون
pandas create new column based on values from other columns
Selecting Subsets of Data in Pandas
from What Code single column df[‘food’] multiple columns df[[‘color’, ‘food’, ‘score’]] single row df.loc[‘Niko’] multiple rows df.loc[[‘Niko’, ‘Penelope’]] slice notation to select a range of rows df.loc[‘Niko’:’Dean’] df.loc[:’Aaron’] stepping by 2 df.loc[‘Niko’:’Christina’:2] rows and columns df.loc[row_selection, column_selection] df.loc[‘Jane’:’Penelope’, [‘state’, ‘color’]] single row df.iloc[3] multiple rows df.iloc[[5, 2, 4]] df.iloc[3:5] df.iloc[[2,3], [0,… Continue reading Selecting Subsets of Data in Pandas
Useful Python pandas codes
– To Rename the data framedf.rename(columns={“contract_id”:”deal_id”},inplace=True) – Where statement tips[tips[‘time’] == ‘Dinner’].head(۵) – vlookupmg = pd.merge(df,AgReg,on=”deal_id”,how=”left”) – choose the first column of an array or first part of a string with a delimitter df[“cat”] = df[“CategoryID”].str.split(‘,’,1).str[0] – filling na or nan or Null values df[“CategoryID”].fillna(“”,inplace=True) – Convert To date time pd.to_datetime(df[“start_date”],errors=’ignore’) combination of where and select some.… Continue reading Useful Python pandas codes
Pandas V.S SQL
If you knew SQL before and want to migrate to Python, you can use this article. TiTle SQL Pandas Desc Simple SELECT total_bill, tip, smoker, time FROM tips LIMIT ۵; tips[[‘total_bill’, ‘tip’, ‘smoker’, ‘time’]].head(۵) Where SELECT * FROM tips WHERE time = ‘Dinner’ LIMIT ۵; tips[tips[‘time’] == ‘Dinner’].head(۵) Multiple conditions SELECT * FROM tips WHERE… Continue reading Pandas V.S SQL