Reuven M. Lerner
@lernerpython.com
Helping you become more confident with Python and Pandas since 1995.
• Courses: LernerPython.com
• Newsletters: BetterDevelopersWeekly.com • BambooWeekly.com
• Books: PythonWorkout.com • PandasWorkout.com
• Videos: YouTube.com/reuvenlerner
• Courses: LernerPython.com
• Newsletters: BetterDevelopersWeekly.com • BambooWeekly.com
• Books: PythonWorkout.com • PandasWorkout.com
• Videos: YouTube.com/reuvenlerner
In today's Bamboo Weekly, I pose 5 data-analysis questions about museum heists — based on a recent paper, and the recent theft from the Louvre in Paris.
Use grouping, regular expressions, and multi-indexes to analyze heist data!
Improve your Pandas skills every Wednesday: bambooweekly.com
Use grouping, regular expressions, and multi-indexes to analyze heist data!
Improve your Pandas skills every Wednesday: bambooweekly.com
November 12, 2025 at 5:00 PM
In today's Bamboo Weekly, I pose 5 data-analysis questions about museum heists — based on a recent paper, and the recent theft from the Louvre in Paris.
Use grouping, regular expressions, and multi-indexes to analyze heist data!
Improve your Pandas skills every Wednesday: bambooweekly.com
Use grouping, regular expressions, and multi-indexes to analyze heist data!
Improve your Pandas skills every Wednesday: bambooweekly.com
In the latest Bamboo Weekly, I pose data-analysis questions about cellphones in schools:
• What policies do schools have?
° Do rules differ by age or region?
• What effects (positive and negative) do schools report from phone use?
Level up your #Python #Pandas skills every week: bambooweekly.com
• What policies do schools have?
° Do rules differ by age or region?
• What effects (positive and negative) do schools report from phone use?
Level up your #Python #Pandas skills every week: bambooweekly.com
November 7, 2025 at 11:00 AM
In the latest Bamboo Weekly, I pose data-analysis questions about cellphones in schools:
• What policies do schools have?
° Do rules differ by age or region?
• What effects (positive and negative) do schools report from phone use?
Level up your #Python #Pandas skills every week: bambooweekly.com
• What policies do schools have?
° Do rules differ by age or region?
• What effects (positive and negative) do schools report from phone use?
Level up your #Python #Pandas skills every week: bambooweekly.com
Hurricane Melissa is causing awful damage. In the latest Bamboo Weekly, I pose six problems based on NOAA hurricane data -- using grouping, resampling, and plotting on windspeed and even their names.
Check out bambooweekly.com, and level up your Pandas skills!
Check out bambooweekly.com, and level up your Pandas skills!
October 30, 2025 at 7:00 PM
Hurricane Melissa is causing awful damage. In the latest Bamboo Weekly, I pose six problems based on NOAA hurricane data -- using grouping, resampling, and plotting on windspeed and even their names.
Check out bambooweekly.com, and level up your Pandas skills!
Check out bambooweekly.com, and level up your Pandas skills!
The latest Bamboo Weekly has it all: Joins, plotting, and Marimo UI elements... but also central banking, inflation, and macroeconomics.
(Also: A panda dressed like Eva Peron!)
Solve problems related to Argentina with real-world data, while improving your Pandas.
Check it out: bambooweekly.com
(Also: A panda dressed like Eva Peron!)
Solve problems related to Argentina with real-world data, while improving your Pandas.
Check it out: bambooweekly.com
October 23, 2025 at 3:01 PM
The latest Bamboo Weekly has it all: Joins, plotting, and Marimo UI elements... but also central banking, inflation, and macroeconomics.
(Also: A panda dressed like Eva Peron!)
Solve problems related to Argentina with real-world data, while improving your Pandas.
Check it out: bambooweekly.com
(Also: A panda dressed like Eva Peron!)
Solve problems related to Argentina with real-world data, while improving your Pandas.
Check it out: bambooweekly.com
How much do developers earn? What languages (other than Python) do they want to learn?
In the latest Bamboo Weekly, we analyze results from the 2025 Stack Overflow survey.
Improve your #Python #Pandas and #dataanalysis skills — questions on Wednesdays, solutions on Thursdays.
bambooweekly.com
In the latest Bamboo Weekly, we analyze results from the 2025 Stack Overflow survey.
Improve your #Python #Pandas and #dataanalysis skills — questions on Wednesdays, solutions on Thursdays.
bambooweekly.com
October 16, 2025 at 7:05 PM
How much do developers earn? What languages (other than Python) do they want to learn?
In the latest Bamboo Weekly, we analyze results from the 2025 Stack Overflow survey.
Improve your #Python #Pandas and #dataanalysis skills — questions on Wednesdays, solutions on Thursdays.
bambooweekly.com
In the latest Bamboo Weekly, we analyze results from the 2025 Stack Overflow survey.
Improve your #Python #Pandas and #dataanalysis skills — questions on Wednesdays, solutions on Thursdays.
bambooweekly.com
The US has imposed big tariffs on Chinese goods. Have they affected China's exports to the US? To the rest of the world?
Bamboo Weekly asks you to answer these questions using #Python and #pandas , using Chinese export stats.
Get new data challenges every Wednesday: bambooweekly.com .
Bamboo Weekly asks you to answer these questions using #Python and #pandas , using Chinese export stats.
Get new data challenges every Wednesday: bambooweekly.com .
October 8, 2025 at 4:16 PM
The US has imposed big tariffs on Chinese goods. Have they affected China's exports to the US? To the rest of the world?
Bamboo Weekly asks you to answer these questions using #Python and #pandas , using Chinese export stats.
Get new data challenges every Wednesday: bambooweekly.com .
Bamboo Weekly asks you to answer these questions using #Python and #pandas , using Chinese export stats.
Get new data challenges every Wednesday: bambooweekly.com .
The US government is shut down! But Bamboo Weekly is still is on the job, with #dataanalysis puzzles — this time, about US federal employees.
Get new #Python #Pandas challenges on Wednesdays, with detailed solutions and explanations on Thursdays, at bambooweekly.com .
Get new #Python #Pandas challenges on Wednesdays, with detailed solutions and explanations on Thursdays, at bambooweekly.com .
October 3, 2025 at 6:38 AM
The US government is shut down! But Bamboo Weekly is still is on the job, with #dataanalysis puzzles — this time, about US federal employees.
Get new #Python #Pandas challenges on Wednesdays, with detailed solutions and explanations on Thursdays, at bambooweekly.com .
Get new #Python #Pandas challenges on Wednesdays, with detailed solutions and explanations on Thursdays, at bambooweekly.com .
The UN is in session. For politicians, that means speeches and fancy meetings.
And so, Bamboo Weekly's latest batch of #Pandas challenges use grouping, text analysis, and pivot tables to review Security Council records.
Check them out: bambooweekly.com
And so, Bamboo Weekly's latest batch of #Pandas challenges use grouping, text analysis, and pivot tables to review Security Council records.
Check them out: bambooweekly.com
September 25, 2025 at 3:20 PM
The UN is in session. For politicians, that means speeches and fancy meetings.
And so, Bamboo Weekly's latest batch of #Pandas challenges use grouping, text analysis, and pivot tables to review Security Council records.
Check them out: bambooweekly.com
And so, Bamboo Weekly's latest batch of #Pandas challenges use grouping, text analysis, and pivot tables to review Security Council records.
Check them out: bambooweekly.com
I had a great time at PyCon India, and in Bangalore. But the traffic was ... quite the experience, both taking taxis crossing streets.
For this week's data-analysis problems in Bamboo Weekly, I thus looked at vehicle registrations in India.
Check it out at bambooweekly.com!
For this week's data-analysis problems in Bamboo Weekly, I thus looked at vehicle registrations in India.
Check it out at bambooweekly.com!
September 19, 2025 at 12:01 PM
I had a great time at PyCon India, and in Bangalore. But the traffic was ... quite the experience, both taking taxis crossing streets.
For this week's data-analysis problems in Bamboo Weekly, I thus looked at vehicle registrations in India.
Check it out at bambooweekly.com!
For this week's data-analysis problems in Bamboo Weekly, I thus looked at vehicle registrations in India.
Check it out at bambooweekly.com!
Ever wonder which airlines are more cramped? Or how much more room premium economy or business class gives you?
In the latest Bamboo Weekly, we use #Pandas to analyze airline seating data with grouping, pivot tables, and regular expressions.
New Pandas questions every Wednesday: bambooweekly.com
In the latest Bamboo Weekly, we use #Pandas to analyze airline seating data with grouping, pivot tables, and regular expressions.
New Pandas questions every Wednesday: bambooweekly.com
September 11, 2025 at 10:48 AM
Ever wonder which airlines are more cramped? Or how much more room premium economy or business class gives you?
In the latest Bamboo Weekly, we use #Pandas to analyze airline seating data with grouping, pivot tables, and regular expressions.
New Pandas questions every Wednesday: bambooweekly.com
In the latest Bamboo Weekly, we use #Pandas to analyze airline seating data with grouping, pivot tables, and regular expressions.
New Pandas questions every Wednesday: bambooweekly.com
It's hot and rainy in Taipei. But just how rainy?
In my PyCon TW lightning talk, I downloaded, analyzed, and plotted rain data using Pandas.
I did it all in @marimo.io , and posted it to the "Molab" server, so you run the analysis in your browser: molab.marimo.io/notebooks/nb...
In my PyCon TW lightning talk, I downloaded, analyzed, and plotted rain data using Pandas.
I did it all in @marimo.io , and posted it to the "Molab" server, so you run the analysis in your browser: molab.marimo.io/notebooks/nb...
September 10, 2025 at 10:09 AM
It's hot and rainy in Taipei. But just how rainy?
In my PyCon TW lightning talk, I downloaded, analyzed, and plotted rain data using Pandas.
I did it all in @marimo.io , and posted it to the "Molab" server, so you run the analysis in your browser: molab.marimo.io/notebooks/nb...
In my PyCon TW lightning talk, I downloaded, analyzed, and plotted rain data using Pandas.
I did it all in @marimo.io , and posted it to the "Molab" server, so you run the analysis in your browser: molab.marimo.io/notebooks/nb...
The latest Bamboo Weekly examines wind turbines:
• Which countries generate the most electricity from wind?
* Do countries that invest in wind power also invest in solar?
Level up your #Python/#Pandas skills! New questions every Wednesday, new solutions every Thursday.
bambooweekly.com
• Which countries generate the most electricity from wind?
* Do countries that invest in wind power also invest in solar?
Level up your #Python/#Pandas skills! New questions every Wednesday, new solutions every Thursday.
bambooweekly.com
August 28, 2025 at 10:25 PM
The latest Bamboo Weekly examines wind turbines:
• Which countries generate the most electricity from wind?
* Do countries that invest in wind power also invest in solar?
Level up your #Python/#Pandas skills! New questions every Wednesday, new solutions every Thursday.
bambooweekly.com
• Which countries generate the most electricity from wind?
* Do countries that invest in wind power also invest in solar?
Level up your #Python/#Pandas skills! New questions every Wednesday, new solutions every Thursday.
bambooweekly.com
Have Canadians stopped visiting the US?
In this week's Bamboo Weekly, we examined numbers from the Canadian government. And yes, we saw a steep year-over-year drop in the first six months of 2025.
Level up your #Python/#Pandas skills every Wednesday, at bambooweekly.com .
In this week's Bamboo Weekly, we examined numbers from the Canadian government. And yes, we saw a steep year-over-year drop in the first six months of 2025.
Level up your #Python/#Pandas skills every Wednesday, at bambooweekly.com .
August 14, 2025 at 4:55 PM
Have Canadians stopped visiting the US?
In this week's Bamboo Weekly, we examined numbers from the Canadian government. And yes, we saw a steep year-over-year drop in the first six months of 2025.
Level up your #Python/#Pandas skills every Wednesday, at bambooweekly.com .
In this week's Bamboo Weekly, we examined numbers from the Canadian government. And yes, we saw a steep year-over-year drop in the first six months of 2025.
Level up your #Python/#Pandas skills every Wednesday, at bambooweekly.com .
Are fewer Canadians visiting the US now that Trump is president?
In the latest Bamboo Weekly, we examine Canadian border-crossing statistics — while reducing our memory footprint, using time series, and creating pivot tables.
Improve your #Python #Pandas skills every Wednesday: bambooweekly.com
In the latest Bamboo Weekly, we examine Canadian border-crossing statistics — while reducing our memory footprint, using time series, and creating pivot tables.
Improve your #Python #Pandas skills every Wednesday: bambooweekly.com
August 14, 2025 at 12:05 AM
Are fewer Canadians visiting the US now that Trump is president?
In the latest Bamboo Weekly, we examine Canadian border-crossing statistics — while reducing our memory footprint, using time series, and creating pivot tables.
Improve your #Python #Pandas skills every Wednesday: bambooweekly.com
In the latest Bamboo Weekly, we examine Canadian border-crossing statistics — while reducing our memory footprint, using time series, and creating pivot tables.
Improve your #Python #Pandas skills every Wednesday: bambooweekly.com
Last week's US jobs report reduced previous estimates, leading to the firing of the head statistician.
Today's Bamboo Weekly examines the BLS data, calculating these changes ourselves with #Python #Pandas.
Improve your data skills every Wednesday: bambooweekly.com
Today's Bamboo Weekly examines the BLS data, calculating these changes ourselves with #Python #Pandas.
Improve your data skills every Wednesday: bambooweekly.com
August 6, 2025 at 3:00 PM
Last week's US jobs report reduced previous estimates, leading to the firing of the head statistician.
Today's Bamboo Weekly examines the BLS data, calculating these changes ourselves with #Python #Pandas.
Improve your data skills every Wednesday: bambooweekly.com
Today's Bamboo Weekly examines the BLS data, calculating these changes ourselves with #Python #Pandas.
Improve your data skills every Wednesday: bambooweekly.com
It's summer in much of the world, and this summer is *hot*!
In the latest Bamboo Weekly, I pose six questions based on European climate data. But we also explore xarray, PyArrow, pivot tables, plotting, and memory optimization.
Level up your #Python #Pandas every Wednesday: bambooweekly.com !
In the latest Bamboo Weekly, I pose six questions based on European climate data. But we also explore xarray, PyArrow, pivot tables, plotting, and memory optimization.
Level up your #Python #Pandas every Wednesday: bambooweekly.com !
July 24, 2025 at 12:02 AM
It's summer in much of the world, and this summer is *hot*!
In the latest Bamboo Weekly, I pose six questions based on European climate data. But we also explore xarray, PyArrow, pivot tables, plotting, and memory optimization.
Level up your #Python #Pandas every Wednesday: bambooweekly.com !
In the latest Bamboo Weekly, I pose six questions based on European climate data. But we also explore xarray, PyArrow, pivot tables, plotting, and memory optimization.
Level up your #Python #Pandas every Wednesday: bambooweekly.com !
Delightfully emcouraging keynote from @savannah.dev at @europython.eu about how everyone can, and should, contribute to Python... And that everyone does something different, in their own way, which is a good thing.
A great way to start the conference!
A great way to start the conference!
July 16, 2025 at 8:16 AM
Delightfully emcouraging keynote from @savannah.dev at @europython.eu about how everyone can, and should, contribute to Python... And that everyone does something different, in their own way, which is a good thing.
A great way to start the conference!
A great way to start the conference!
How many Americans bought electric vehicles (EVs) in the last decade?
In the latest Bamboo Weekly, I pose six problems on this topic, using data from the Department of Transportation.
Level up your #Python #Pandas skills every Wednesday: bambooweekly.com
In the latest Bamboo Weekly, I pose six problems on this topic, using data from the Department of Transportation.
Level up your #Python #Pandas skills every Wednesday: bambooweekly.com
July 11, 2025 at 6:02 AM
How many Americans bought electric vehicles (EVs) in the last decade?
In the latest Bamboo Weekly, I pose six problems on this topic, using data from the Department of Transportation.
Level up your #Python #Pandas skills every Wednesday: bambooweekly.com
In the latest Bamboo Weekly, I pose six problems on this topic, using data from the Department of Transportation.
Level up your #Python #Pandas skills every Wednesday: bambooweekly.com
How much is the US dollar worth? Less than before — as Americans are finding when they travel abroad.
In the latest Bamboo Weekly, I pose #Python #Pandas problems about the dollar's worth.
Level up your data-analysis skills every Wednesday: bambooweekly.com
In the latest Bamboo Weekly, I pose #Python #Pandas problems about the dollar's worth.
Level up your data-analysis skills every Wednesday: bambooweekly.com
July 2, 2025 at 6:40 PM
How much is the US dollar worth? Less than before — as Americans are finding when they travel abroad.
In the latest Bamboo Weekly, I pose #Python #Pandas problems about the dollar's worth.
Level up your data-analysis skills every Wednesday: bambooweekly.com
In the latest Bamboo Weekly, I pose #Python #Pandas problems about the dollar's worth.
Level up your data-analysis skills every Wednesday: bambooweekly.com
Tired of boring, easy, toy Pandas exercises?
Check out Bamboo Weekly (bambooweekly.com), where you work with real-world (i.e., messy) data sets. Make sense of data using multi-indexes, pivot tables, date/time functions, and regular expressions.
Check out Bamboo Weekly (bambooweekly.com), where you work with real-world (i.e., messy) data sets. Make sense of data using multi-indexes, pivot tables, date/time functions, and regular expressions.
June 9, 2025 at 11:35 AM
Tired of boring, easy, toy Pandas exercises?
Check out Bamboo Weekly (bambooweekly.com), where you work with real-world (i.e., messy) data sets. Make sense of data using multi-indexes, pivot tables, date/time functions, and regular expressions.
Check out Bamboo Weekly (bambooweekly.com), where you work with real-world (i.e., messy) data sets. Make sense of data using multi-indexes, pivot tables, date/time functions, and regular expressions.
Science and research are under attack, with many billions of dollars in NIH and NSF grants terminated by the Trump administration.
In the latest Bamboo Weekly, we use Pandas to analyze data gathered by Grant Watch.
Level up your data-analysis skills every week: bambooweekly.com
In the latest Bamboo Weekly, we use Pandas to analyze data gathered by Grant Watch.
Level up your data-analysis skills every week: bambooweekly.com
June 4, 2025 at 3:00 PM
Science and research are under attack, with many billions of dollars in NIH and NSF grants terminated by the Trump administration.
In the latest Bamboo Weekly, we use Pandas to analyze data gathered by Grant Watch.
Level up your data-analysis skills every week: bambooweekly.com
In the latest Bamboo Weekly, we use Pandas to analyze data gathered by Grant Watch.
Level up your data-analysis skills every week: bambooweekly.com
It looks like the US is doing away with the penny — so this week, Bamboo Weekly examines coins from around the world. Along the way, we're practicing our use of APIs and JSON.
Level up your #Python and #Pandas skills every week with Bamboo Weekly: www.bambooweekly.com/bw-120-penni...
Level up your #Python and #Pandas skills every week with Bamboo Weekly: www.bambooweekly.com/bw-120-penni...
May 28, 2025 at 4:28 PM
It looks like the US is doing away with the penny — so this week, Bamboo Weekly examines coins from around the world. Along the way, we're practicing our use of APIs and JSON.
Level up your #Python and #Pandas skills every week with Bamboo Weekly: www.bambooweekly.com/bw-120-penni...
Level up your #Python and #Pandas skills every week with Bamboo Weekly: www.bambooweekly.com/bw-120-penni...
The main part of #PyConUS wrapped up on Sunday, but the year is full of Python conferences, all over the world.
In today's Bamboo Weekly, I challenge you to use #Pandas to answer five data-analysis questions about a #Python conference dataset.
Check it out: www.bambooweekly.com/bw-119-pytho...
In today's Bamboo Weekly, I challenge you to use #Pandas to answer five data-analysis questions about a #Python conference dataset.
Check it out: www.bambooweekly.com/bw-119-pytho...
May 22, 2025 at 12:27 AM
The main part of #PyConUS wrapped up on Sunday, but the year is full of Python conferences, all over the world.
In today's Bamboo Weekly, I challenge you to use #Pandas to answer five data-analysis questions about a #Python conference dataset.
Check it out: www.bambooweekly.com/bw-119-pytho...
In today's Bamboo Weekly, I challenge you to use #Pandas to answer five data-analysis questions about a #Python conference dataset.
Check it out: www.bambooweekly.com/bw-119-pytho...
One nice side effect of automatically committing to Git every few minutes? You have a streak of commits that no one else can touch...
May 15, 2025 at 1:36 AM
One nice side effect of automatically committing to Git every few minutes? You have a streak of commits that no one else can touch...
Is the US in a recession? We won't officially know for a while — but with the Sahm rule, we can find out in real time.
In the latest Bamboo Weekly, we use APIs and window functions, the compare our results with FRED.
Level up your #Pandas data-analysis skills: bambooweekly.com
In the latest Bamboo Weekly, we use APIs and window functions, the compare our results with FRED.
Level up your #Pandas data-analysis skills: bambooweekly.com
April 23, 2025 at 3:15 PM
Is the US in a recession? We won't officially know for a while — but with the Sahm rule, we can find out in real time.
In the latest Bamboo Weekly, we use APIs and window functions, the compare our results with FRED.
Level up your #Pandas data-analysis skills: bambooweekly.com
In the latest Bamboo Weekly, we use APIs and window functions, the compare our results with FRED.
Level up your #Pandas data-analysis skills: bambooweekly.com