Decorator Order Executes Route BEFORE Auth Check?!
DECORATOR DISASTER! Apply bottom-to-top! Route runs BEFORE auth! Non-admin deletes 847 users! Cannot recover! $4.7M data loss! €2.7M GDPR fine! Security team FIRED!
#python #pythondisaster #decoratororder #authenticationbypass #routesecurity #productionbug #pythonshorts #pythonwtf #adminaccess #careerending #gdpr #flask
Python slicing out of bounds never crashes
Indexing data[100] on a 3-element list crashes with IndexError, but slicing data[100:] returns an empty list with no error. Python silently clamps slice indices to the valid range. You can slice with absurdly large numbers and Python just gives you what it can.
#pythonweirdestlogic #pythonweirdbehavior #pythongotcha #pythontrick #pythonmindblown #pythonunexpected #pythonwtf #pythonhiddenfeature #pythonco...
This Python function ignores try and except and always returns finally
When try, except, and finally all have return statements, finally always wins. Python guarantees finally blocks execute no matter what. The return in finally overwrites whatever try was about to return. Three return statements, only one actually returns.
#pythonweirdestlogic #pythonweirdbehavior #pythongotcha #pythontrick #pythonmindblown #pythonunexpected #pythonwtf #pythonhi...
Dict Hash Collision DOS Slows Lookups From 1ms To 47 Seconds?!
HASH COLLISION DISASTER! Attacker crafts colliding keys! Dict becomes linked list! O(1)→O(n) lookup! 47 seconds per request! Complete outage! 470K users logged out! $2.3M lost! Infrastructure FIRED!
#python #pythondisaster #hashcollision #dosattack #dictperformance #productionbug #pythonshorts #pythonwtf #o(n)lookup #careerending #sessionstorage #algorithmiccomplexity
Bare Except Catches SystemExit Preventing Graceful Shutdown?!
EXCEPT DISASTER! Bare except swallows SystemExit! Process won't die! Force kill corrupts 2,300 payments! $4.7M phantom charges! Payment team FIRED!
#python #pythondisaster #bareexcept #systemexit #gracefulshutdown #productionbug #pythonshorts #pythonwtf #paymentcorruption #careerending #signalhandling #daemon
Lambda Captures Entire Scope Consuming 47GB RAM?!
LAMBDA MEMORY DISASTER! Closures capture ALL local variables! 1M lambdas × 5KB = 5GB RAM! Can't garbage collect! System thrashing! Event handlers lost! $890K recovery! Architect FIRED!
#python #pythondisaster #lambda #closure #memoryleak #productionbug #pythonshorts #pythonwtf #scopecapture #careerending #eventhandlers #garbagecollection
YAML Load Executes Arbitrary Code Compromising 470 Servers?!
YAML RCE APOCALYPSE! yaml.load() executes Python! Attacker uploads malicious config! Backdoor on all servers! 4.7M database exfiltrated! $47M breach! CISO ARRESTED!
#python #pythondisaster #yaml #remotecodeexecution #configloading #productionbug #pythonshorts #pythonwtf #deserialization #careerending #criminalcharges #pyyaml
Regex Backtracking Takes 47 Seconds Per Email Validation?!
REGEX CATASTROPHIC BACKTRACKING! 28 chars = 268M combinations! 47 seconds per validation! 200 evil emails = total DOS! Product launch FAILED! $8.7M lost sales! Security engineer FIRED!
#python #pythondisaster #regex #catastrophicbacktracking #dosattack #productionbug #pythonshorts #pythonwtf #emailvalidation #careerending #redos #performance
Class Variable Shared Between ALL Instances Breaking Rate Limits?!
CLASS VARIABLE DISASTER! All instances share SAME list! User A's requests counted in User B's limit! 470K users randomly blocked! $2.3M lost API revenue! Rate limiter architect FIRED!
#python #pythondisaster #classvariable #sharedstate #ratelimiting #productionbug #pythonshorts #pythonwtf #instanceconfusion #careerending #apithrottling #oop
Unicode Encoding Corrupts 2.3M Customer Names Permanently?!
UNICODE DISASTER! Latin1 to UTF-8 deletes special characters! José becomes Jos! 2.3M names corrupted! Cannot contact customers! €2.7M GDPR fine! Data engineer FIRED!
#python #pythondisaster #unicode #encoding #datacorruption #productionbug #pythonshorts #pythonwtf #gdprviolation #careerending #customerdata #silentdeletion
Python Peak