I’m exploring the Python stack for data analysis and machine learning.
I know I’m late to the party, but have only recently discovered the impressive Jupyter Notebook (formerly IPython) data analysis platform and community. It makes “storytelling from data” easy. But doing so with ease requires fluency with a sometimes unintuitive yet very powerful syntax.
Today’s question: Which Seattle-area restaurants have been forced to close the most often by restaurant inspectors?
For this morning’s project, I headed on over to a local Starbucks, tapped into wifi, and downloaded the King County Restaurant Inspection dataset.
King County’s restaurant inspection policies are spelled out here, and violations generally fall into “red” (serious) or “blue” (non-serious) violations. Red violations can and often do result in forced temporary closure of the restaurant.
Now, for this SQL-guy, importing the data file into a database and doing a simple GROUP BY query would make this question easy to answer, but for my Python learning purposes, that’d be cheating. I want to learn a bit about data visualization and pattern recognition.
After a little bit of munging of the data, I came out with the list below, which shows restaurant name and the total distinct closure-worthy moments. Surprising to me that some were such repeat offenders. Really, Anjappar Chettinad? Inspectors forced closure five separate times?
From January 2006 until March 2018, there have been 181 distinct restaurant closures in the Seattle area by inspection.
Some, like Anjappar Chettinad Indian Restaurant, King Buffet and 663 Bistro, have been closed multiple times. You can see that the list of inspection-forced-closures is heavily weighted toward international (i.e., Indian, Chinese, Thai, Vietnamese and Mexican) restaurants, but also includes a few taverns, hot dog street vendors, delis and coffee shops.
Here’s a scatter plot of where these closures have taken place (as you can see, I haven’t yet gotten geo heatmaps sorted out yet — I’ll be exploring folium or other geo-plotters in the future.) But it seems to show that the major areas are South Lake Union and Queen Anne:
Pace of Closures by Year
Let’s see how closures have paced by year (2018 is partial, through mid-March 2018):
Interesting — what’s going on here? Why was 2007–2010 a down-period, particularly 2010? Was that a particularly careful, healthy year? That seems unlikely. Possible explainers: economic effects reducing inspections? Measurements not recorded in the same format? Or was something else going on?
Looking at total inspections by year, we can clearly see that it’s not because of cutbacks in inspections. Here are the total unique inspections (i.e., unique restaurant/date pairs) by year, through mid-March 2018:
So there’s a steady increase in inspections from year to year. Don’t know exactly why 2010 was such a closure-light year, or why 2008–2010 trended down; my current hypothesis is that there was a policy change, or perhaps less aggressive inspections, that made these more lenient.
Distribution of Grades
Just how bad is it, comparatively speaking, when you see a “Needs Improvement”, or even an “Okay” sign? You may have anecdotally noticed that it’s pretty rare when you glance at the door and see one of these two grades. Here’s a histogram — one per inspector visit — and the resultant grades assigned, since 2006 (1=Excellent, 2=Great, 3=Okay, 4=Needs Improvement.)
What I take away from the above is that “Okay” and “Needs Improvement” are real outliers.
For more info, you can check out the King County Restaurant Inspection lookup system here: https://www.kingcounty.gov/depts/health/environmental-health/food-safety/inspection-system/search.aspx#/
https://gist.github.com/stevemurch/ccac0123600cefdc7314d0524a449f8b.js
Restaurants that have an “Okay” Grade as of March 28 2018:
0 ANJAPPAR CHETTINAD INDIAN RESTAURANT 1 ARAYA'S PLACE 2 BIG BAZAAR 3 CASA PATRON 4 CHAAT N ROLL 5 CHINA FIRST 6 CROSSROADS CAFE 7 FOODSHION 8 GALLO DE ORO 9 GOLDEN INDIAN CURRY HOUSE 10 GREEK PITA 11 GREEN LEAF VIETNAMESE RESTAURANT 12 HALAL MARWA RESTAURANT 13 HAWAII BBQ 14 HOMEGROWN SUSTAINABLE SANDWICH SHOP-KIOSK 15 HUNAN CHINESE KITCHEN 16 HYDERABAD HOUSE 17 Hung Long Market 18 ICHIRO TERIYAKI 19 J B GARDEN 20 KING'S CHINESE SEAFOOD RESTAURANT 21 LOCAL PHO 22 LOTUS ASIAN KITCHEN & LOUNGE 23 LUNCHBOX LABORATORY 24 MARINEPOLIS SUSHILAND 25 MIRAK RESTAURANT 26 Niko's Teriyaki 27 PABLA INDIAN CUISINE 28 PEN THAI RESTAURANT 29 PHO VIET ANH 30 RUBY THAI 31 SAIGON VIETNAM DELI 32 SAM'S NOODLE HOUSE 33 SEOUL TOFU HOUSE 2 34 SUNNY TERIYAKI 35 SUSHIMARU RESTAURANT 36 SZECHUAN CHEF RESTAURANT 37 THAI CURRY SIMPLE 38 THAI ON 1ST 39 TIENDA LATIN MARKET 40 U:DON FRESH 41 UDUPI CAFE 42 YU SHAN
Restaurant name, total number of red-cards shown below.
More than one red card can and often is handed out per visit — so the number of actual closures is significantly less than the numbers below:
663 BISTRO 57
ANJAPPAR CHETTINAD INDIAN RESTAURANT 53
KING BUFFET 49
SPICED TRULY CHINESE CUISINE 32
ROYAL INDIA 30
UDUPI CAFE 24
SICHUANESE CUISINE 23
MIDORI TERIYAKI 22
OH! INDIA 21
CURBSIDE (KC225) 20
BIG BAZAAR 20
CAFE PHO II, INC. 17
GOLDEN DAISY RESTAURANT 17
ICHIRO TERIYAKI 17
BLUE FIN & SEAFOOD 17
GREEN LEAF VIETNAMESE RESTAURANT 16
BEBAS & AMIGOS 16
TOP GUN OF BELLEVUE 16
YU SHAN 15
BENTO BOX, THE 14
MACKY’S DIM SUM 14
KING’S CHINESE SEAFOOD RESTAURANT 13
HANABI SUSHI RESTAURANT 13
YOKO 3 13
SAIGON DELI 13
TERIYAKI BISTRO 13
FORTUNE GARDEN RESTAURANT 12
J B GARDEN 12
HYDERABAD HOUSE 12
HANAHREUM MART 11
HARBOR CITY RESTAURANT 11
YUMMY PHO 11
MAYURI FOODS & VIDEO 11
KABAB PALACE 10
SEADLE HOUSE 10
SILVER SPOON THAI RESTAURANT 10
SAFFRON SPICE 10
CAFE PHO 10
MEDITERRANEAN MIX 9
KUNG HO GOURMET CHINESE RESTAURANT 9
LA PINA/TRES HERMANOS 9
SEATTLE DELI 9
HONG KONG BISTRO 9
ASIA BBQ & FAST FOOD 9
SEOUL TOFU HOUSE 2 9
CEDARS BROOKLYN DELI 9
HUNAN CHINESE KITCHEN 8
MAHARAJA CUSINE OF INDIA 8
IKIIKI 8
TOULOUSE PETIT KITCHEN & LOUNGE 8
SKILLET STREET FOOD, LLC 8
FEAST 8
SUNNY TERIYAKI 8
MAZATLAN RESTAURANT 8
RANCHO BRAVO TACOS #1 8
LOTUS ASIAN KITCHEN & LOUNGE 8
TAQUERIA GUADALAJARA 8
PALACE KOREAN GRILL 8
LOCAL PHO 7
PARKSIDE DELI & SUNDRIES 7
MIRAK RESTAURANT 7
COUNTRY SIDE CAFE 6
FAMOUS RANDY 6
MUNCH BOSS (KC465) 6
IMPERIAL GARDEN & HAPPY TUMMY 6
13 COINS 6
THAI ON 1ST 6
THAI CHEF 6
SMALL FRYE’S 6
PIONEER GRILL@VARAMINI COMMISSARY 6
MUSTARD SEED CAFE 5
PHO TAI 5
CHU MINH TOFU & VEGETARIAN DELI 5
GRILL CITY 5
NORTHWEST CATERING #9 5
LA RIVIERA MAYA #2 4
GOURMET DOG JAPON 4
JEMIL’S BIG EASY 4
RAM RESTAURANT & BREWERY 4
PEOPLE’S BURGER@VARAMINI COMMISSARY 4
ROMIO’S PIZZA & PASTA 4
TAQUERIA EL ASADERO 4
DONA QUEEN DONUT & DELI 4
DRAGONFISH ASIAN CAFE 4
SAM’S NOODLE HOUSE 4
SAMURAI NOODLE 4
LA PLAYA MEXICAN RESTAURANT 4
HOMEGROWN SUSTAINABLE SANDWICH SHOP-KIOSK 3
HALLAVA FALAFEL LLC 3
N W HASIMO FAST FOOD AND DELI 3
STOPWATCH ESPRESSO 3
MANCHU WOK AT SEA-TAC 3
RACHA NOODLES & THAI CUISINE 3
SUBWAY #25524-O 3
EL CAMION 3
CHUCK E CHEESE’S 3
THAI CURRY SIMPLE 3
BIG BAWARCHI 3
AL’S GOURMET SAUSAGE #5 3
RAIN DOGS SODO, CART #2 3
LANPONI THAI RESTAURANT 3
PHO THU THUY 3
TAQUERIA EL CORRAL #1 2
BEST CORN #1 2
SUNSET FRIED CHICKEN 2
BOUMBA HOTDOG 2
GREAT WESTERN PACIFIC 2
MCDONALD’S SAMMAMISH #5523 2
YUMBIT (KC298) 2
DANTE’S INFERNO (1) 2
CAFE ZUM ZUM 2
MAIN ST GYROS 2
QDOBA #2618 2
HOW TO COOK A WOLF 2
OASIS TEA ZONE 2
Hung Long Market 2
I LOVE MY GFF 2
LUNCHBOX LABORATORY 2
CAFFE BEE 1
BLAZEN (KC547) 1
THAI 2 G0 1
THAI BISTRO RESTAURANT 1
CHIPOTLE MEXICAN GRILL #2228 1
LT’S FAMOUS BBQ 1
QUARTER CHUTE CAFE 1
BISTRO BAFFI 1
OSTERIA DA PRIMO 1
PHI KAPPA SIGMA 1
NEEMA’S 1
BENEVOR, INC 1
BEEZNEEZ GOURMET SAUSAGE (KC287) 1
TOSHI’S TERIYAKI 1
TUKWILA DELI 1
ART MARBLE 21 1
VOXX COFFEE 1
ANGELO’S PIZZA & PASTA 1
7-ELEVEN STORE #2361–27283C 1
WORLD WRAPPS — REI 1
MEDITERRANEAN KITCHEN 1
COWGIRLS ESPRESSO 1
CHURCH’S CHICKEN 1
GERALDINE’S COUNTER 1
RAM RESTAURANT & BIG HORN BREWERY 1
JUISALA 1
KFC #332 1
POTBELLY SANDWICH SHOP 1
KING OF PHO 1
SANDHU SHELL MINI-MART 1
Niko’s Teriyaki 1
HALLAVA FALAFEL 1
Genki Sushi 1
KIRKLAND AMERICAN LITTLE LEAGUE 1
PING’S FOOD MART 1
GARAM MASALA AND SPICES 1
CLASS ACT 1
FULL LIFE CARE 1
FREMONT HOT DOG 1
SUBWAY 1
LA RUSTICA 1
LA VITA E BELLA (KC222) 1
LADYBUG ESPRESSO 1
TACO GOL TAQUERIA 1
CROSSROADS CAFE 1
QDOBA MEXICAN EATS 1
COURTYARD BY MARRIOTT — STARBUCKS 1
COFFEE TIME 1
MARINEPOLIS SUSHILAND 1
Another question: What Seattle Zip Codes have had the most “type red” (serious) violations? I haven’t quite figured out how to display counts on a heatmap just yet, but it turns out the answer is 98109, which includes Queen Anne and South Lake Union:
Note that I haven’t yet divided by inspection frequency, that’s simply the nominal leader. It could certainly be because that’s where more restaurants are, or where more inspections have been scheduled. Will likely take a look at that in a future update.
Steve’s a Seattle-based entrepreneur and software leader, husband and father of three. He’s half Canadian, and east-coast born and raised. Steve has made the Pacific Northwest his home since 1991, when he moved here to work for Microsoft. He’s started and sold multiple Internet companies. Politically independent, he writes on occasion about city politics and national issues, and created Alignvote in the 2019 election cycle. He holds a BS in Applied Math (Computer Science) and Business from Carnegie Mellon University, a Masters in Computer Science from Stanford University, and an MBA from the Harvard Business School, where he graduated a George F. Baker Scholar. Steve volunteers when time allows with Habitat for Humanity, University District Food Bank, Technology Access Foundation (TAF) and other organizations in Seattle.