Empty strings are "falsy" (python 2 or python 3 reference), which means they are considered false in a Boolean context, so you can just do this: ... <看更多>

In this python tutorial, we discuss how to declare empty string in python ! We go over 2 methods you can use to declare empty strings in ... ... <看更多>

ID: java/inefficient-empty-string-test Kind: problem Severity: recommendation Precision: high Tags: - efficiency - maintainability Query suites: ... ... <看更多>

However, I would avoid things like empty strings, 0 / -1 , false as defaults at all costs. None throws an error when used. -1 does not. Errors ... ... <看更多>