python代碼靜態分析工具：PyChecker
pychecker編寫的Python靜態編譯器，用于在編譯器查找py腳本的錯誤，它支持python2.0 – 2.7。PyChecker可以發現的問題包括：
- No global found (e.g., using a module without importing it)
- Passing the wrong number of parameters to functions/methods/constructors
- Passing the wrong number of parameters to builtin functions & methods
- Using format strings that don't match arguments
- Using class methods and attributes that don't exist
- Changing signature when overriding a method
- Redefining a function/class/method in the same scope
- Using a variable before setting it
- self is not the first parameter defined for a method
- Unused globals and locals (module or variable)
- Unused function/method arguments (can ignore self)
- No doc strings in modules, classes, functions, and methods
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