bsweger

Useful Pandas Snippets

A personal diary of DataFrame munging over the years.

Data Types and Conversion

Convert Series datatype to numeric (will error if column has non-numeric values)
(h/t @makmanalp)

osipov

sudo apt-get remove scala-library scala
sudo wget www.scala-lang.org/files/archive/scala-2.10.4.deb
sudo dpkg -i scala-2.10.4.deb
sudo apt-get update
sudo apt-get install scala
wget http://scalasbt.artifactoryonline.com/scalasbt/sbt-native-packages/org/scala-sbt/sbt/0.12.4/sbt.deb
sudo dpkg -i sbt.deb
sudo apt-get update
sudo apt-get install sbt

bigsnarfdude

# scala install
wget www.scala-lang.org/files/archive/scala-2.11.7.deb
sudo dpkg -i scala-2.11.7.deb

 
# sbt installation
echo "deb https://dl.bintray.com/sbt/debian /" | sudo tee -a /etc/apt/sources.list.d/sbt.list
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 642AC823
sudo apt-get update
sudo apt-get install sbt

bmcfee

tsiege

ANNOUNCEMENT

I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!






\

chiraggude

# Install Ruby 

wget http://ftp.ruby-lang.org/pub/ruby/2.1/ruby-2.1.1.tar.gz 
tar xvzf ruby-2.1.1.tar.gz
cd ruby-2.1.1
./configure --prefix=/usr
make
make install

# remove "ruby-2.1.1" folder in /root

dergachev

TLDR: I now add the following snippet to all my Dockerfiles:

# If host is running squid-deb-proxy on port 8000, populate /etc/apt/apt.conf.d/30proxy
# By default, squid-deb-proxy 403s unknown sources, so apt shouldn't proxy ppa.launchpad.net
RUN route -n | awk '/^0.0.0.0/ {print $2}' > /tmp/host_ip.txt
RUN echo "HEAD /" | nc `cat /tmp/host_ip.txt` 8000 | grep squid-deb-proxy \
  && (echo "Acquire::http::Proxy \"http://$(cat /tmp/host_ip.txt):8000\";" > /etc/apt/apt.conf.d/30proxy) \
  && (echo "Acquire::http::Proxy::ppa.launchpad.net DIRECT;" >> /etc/apt/apt.conf.d/30proxy) \
  || echo "No squid-deb-proxy detected on docker host"

maximelebreton

class="[a-zA-Z0-9:;\.\s\(\)\-\,]*"

bmcfee

eliben

#-------------------------------------------------------------------------------
# lexer.py
#
# A generic regex-based Lexer/tokenizer tool.
# See the if __main__ section in the bottom for an example.
#
# Eli Bendersky ([email protected])
# This code is in the public domain
# Last modified: August 2010
#-------------------------------------------------------------------------------