Skip to main content



Two-dimensional, size-mutable, potentially heterogeneous tabular data.

 class pandas.DataFrame(data=None, index=None, columns=None, dtype=None, copy=None)



import pandas as pd

import numpy as np
colab example

# Create and populate a 5x2 NumPy array.
my_data = np.array([[0, 3], [10, 7], [20, 9], [30, 14], [40, 15]])

# Create a Python list that holds the names of the two columns.
my_column_names = ['temperature', 'activity']

# Create a DataFrame.
my_dataframe = pd.DataFrame(data=my_data, columns=my_column_names)

# Print the entire DataFrame


# Create a new column named adjusted.
my_dataframe["adjusted"] = my_dataframe["activity"] + 2

# Print the entire DataFrame
print("Rows #0, #1, and #2:")
print(my_dataframe.head(3), '\n')

print("Row #2:")
print(my_dataframe.iloc[[2]], '\n')

print("Rows #1, #2, and #3:")
print(my_dataframe[1:4], '\n')

print("Column 'temperature':")
# Create a reference by assigning my_dataframe to a new variable.
print("Experiment with a reference:")
reference_to_df = df

# Print the starting value of a particular cell.
print(" Starting value of df: %d" % df['Jason'][1])
print(" Starting value of reference_to_df: %d\n" % reference_to_df['Jason'][1])

# Modify a cell in df.[1, 'Jason'] = df['Jason'][1] + 5
print(" Updated df: %d" % df['Jason'][1])
print(" Updated reference_to_df: %d\n\n" % reference_to_df['Jason'][1])

# Create a true copy of my_dataframe
print("Experiment with a true copy:")
copy_of_my_dataframe = my_dataframe.copy()

# Print the starting value of a particular cell.
print(" Starting value of my_dataframe: %d" % my_dataframe['activity'][1])
print(" Starting value of copy_of_my_dataframe: %d\n" % copy_of_my_dataframe['activity'][1])

# Modify a cell in df.[1, 'activity'] = my_dataframe['activity'][1] + 3
print(" Updated my_dataframe: %d" % my_dataframe['activity'][1])
print(" copy_of_my_dataframe does not get updated: %d" % copy_of_my_dataframe['activity'][1])


d = {'col1': [1, 2], 'col2': [3, 4]}
df = pd.DataFrame(data=d)
   col1  col2
0     1     3
1     2     4 
col1    int64
col2    int64
dtype: object

To enforce a single dtype:

df = pd.DataFrame(data=d, dtype=np.int8) 




Popular posts from this blog

sxhkd volume andbrightness config for dwm on void

xbps-install  sxhkd ------------ mkdir .config/sxhkd cd .config/sxhkd nano/vim sxhkdrc -------------------------------- XF86AudioRaiseVolume         amixer -c 1 -- sset Master 2db+ XF86AudioLowerVolume         amixer -c 1 -- sset Master 2db- XF86AudioMute         amixer -c 1 -- sset Master toggle alt + shift + Escape         pkill -USR1 -x sxhkd XF86MonBrightnessUp          xbacklight -inc 20 XF86MonBrightnessDown          xbacklight -dec 20 ------------------------------------------------------------- amixer -c card_no -- sset Interface volume run alsamixer to find card no and interface names xbps-install -S git git clone xbps-install -S base-devel libX11-devel libXft-devel libXinerama-devel  vim # FREETYPEINC = ${X11INC}/freetype2 #comment for non-bsd make clean install   cp config.def.h config.h vim config.h xbps-install -S font-symbola #for emoji on statusbar support     void audio config xbps-i

Hidden Wiki

Welcome to The Hidden Wiki New hidden wiki url 2015 http://zqktlwi4fecvo6ri.onion Add it to bookmarks and spread it!!! Editor's picks Bored? Pick a random page from the article index and replace one of these slots with it. The Matrix - Very nice to read. How to Exit the Matrix - Learn how to Protect yourself and your rights, online and off. Verifying PGP signatures - A short and simple how-to guide. In Praise Of Hawala - Anonymous informal value transfer system. Volunteer Here are five different things that you can help us out with. Plunder other hidden service lists for links and place them here! File the SnapBBSIndex links wherever they go. Set external links to HTTPS where available, good certificate, and same content. Care to start recording onionland's history? Check out Onionland's Museum Perform Dead Services Duties. Introduction Points - Clearnet search engine for Tor Hidden Services (allows you

download office 2021 and activate

get office from here open powershell as admin (win+x and a ) type cmd  goto insall dir 1.         cd /d %ProgramFiles(x86)%\Microsoft Office\Office16 2.           cd /d %ProgramFiles%\Microsoft Office\Office16 try 1 or 2 depending on installation  install volume license  for /f %x in ('dir /b ..\root\Licenses16\ProPlus2021VL_KMS*.xrm-ms') do cscript ospp.vbs /inslic:"..\root\Licenses16\%x" activate using kms cscript ospp.vbs /setprt:1688 cscript ospp.vbs /unpkey:6F7TH >nul cscript ospp.vbs /inpkey:FXYTK-NJJ8C-GB6DW-3DYQT-6F7TH cscript ospp.vbs / cscript ospp.vbs /act Automatic script (windefender may block it) ------------------------------------------------------------------------------------------------------------------- @echo off title Activate Microsoft Office 2021 (ALL versions) for FREE - =====================================================================================&