Jasper questions

• Pandas: reverse Liker survey answers
• React - Async background API calls
• SQLAlchemy - TypeError: Boolean value of this clause is not defined
• Django - User uploaded S3 files in the view
• FactoryBoy / Django - OneToOneField duplicate key error
• ternary operator inside map
• Django, having Q object filter by function in model
• Pandas: Get per-year counts for Dateranges spanning multiple years
• React - saving state to local storage
• Pandas - Turning column of mixed positive / negative numbers to positive [duplicate]

Jasper answers