hayd

London, United Kingdom

http://andyhayden.co.uk

"... there is no such word as 'impossible' in my dictionary. In fact, everything between 'herring' and 'marmalade' appears to be missing." — Svlad Cjelli

Make it a Short, Self Contained, Correct (Compilable), Example.

Always learning.

github: https://github.com/hayd
careers: http://careers.stackoverflow.com/hayd

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Converting between datetime, Timestamp and datetime64

python datetime numpy pandas asked Dec 4, 2012 at 13:08

stackoverflow.com

130 votes

Save list of DataFrames to multisheet Excel spreadsheet

python pandas openpyxl asked Jan 8, 2013 at 23:12

stackoverflow.com

104 votes

How should I understand the output of dis.dis?

python python-2.7 asked Oct 1, 2012 at 12:14

stackoverflow.com

68 votes

Recursive pattern in regex

python regex recursive-regex asked Oct 15, 2014 at 15:11

stackoverflow.com

55 votes

Why is startswith slower than slicing

python startswith asked Nov 7, 2012 at 13:35

stackoverflow.com

52 votes

Converting DJVU to PDF

pdf ebooks convert djvu asked May 31, 2011 at 14:52

askubuntu.com

39 votes

Spot the difference

discussion review suggested-edits asked Apr 25, 2013 at 13:05

meta.stackexchange.com

37 votes

Why did Cypher trust the Agents?

the-matrix asked May 7, 2013 at 12:19

scifi.stackexchange.com

24 votes

How to install Google appengine?

software-installation asked Apr 19, 2012 at 21:56

askubuntu.com

20 votes

"Uncatching" an exception in python

python exception exception-handling asked Jun 8, 2013 at 16:20

stackoverflow.com

Top Answers

1459

Writing a pandas DataFrame to CSV file

stackoverflow.com

943

gpg failed to sign the data fatal: failed to write commit object [Git 2.10.0]

stackoverflow.com

854

How to sort a dataFrame in python pandas by two or more columns?

stackoverflow.com

843

Convert Python dict into a dataframe

stackoverflow.com

802

How can I get a value from a cell of a dataframe?

stackoverflow.com

736

How to flatten a hierarchical index in columns

stackoverflow.com

721

Convert DataFrame column type from string to datetime

stackoverflow.com

684

Dropping infinite values from dataframes in pandas?

stackoverflow.com

669

How to reversibly store and load a Pandas dataframe to/from disk

stackoverflow.com

596

Convert columns to string in Pandas

stackoverflow.com

580

Combining two Series into a DataFrame in pandas

stackoverflow.com

527

Search for "does-not-contain" on a DataFrame in pandas

stackoverflow.com

515

Renaming column names in Pandas

stackoverflow.com

493

Pandas: Looking up the list of sheets in an excel file

stackoverflow.com

482

How to make good reproducible pandas examples?

stackoverflow.com

482

How do I create test and train samples from one dataframe with pandas?

stackoverflow.com

432

Ignoring NaNs with str.contains

stackoverflow.com

422

Creating an empty Pandas DataFrame, and then filling it

stackoverflow.com

415

Rename Pandas DataFrame Index

stackoverflow.com

379

How do I convert a Pandas series or index to a NumPy array?

stackoverflow.com

364

Efficient way to apply multiple filters to pandas DataFrame or Series

stackoverflow.com

351

How to determine whether a Pandas Column contains a particular value

stackoverflow.com

328

Replacing Pandas or Numpy Nan with a None to use with MysqlDB

stackoverflow.com

303

How to read a .xlsx file using the pandas Library in iPython?

stackoverflow.com

291

Combine Date and Time columns using pandas

stackoverflow.com

283

How to add pandas data to an existing csv file?

stackoverflow.com

277

How to access subdataframes of pandas groupby by key

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262

Convert Pandas column containing NaNs to dtype `int`

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261

Pandas DataFrame Groupby two columns and get counts

stackoverflow.com

236

Custom sorting in pandas dataframe

stackoverflow.com