Ordered and equality comparisons are supported between AST objects. Pickling of AST objects (using the pickle module) is also supported.
AST objects have the following methods:
| [filename]) | 
compileast(ast, filename).
| ) | 
isexpr(ast).
| ) | 
issuite(ast).
| [line_info]) | 
ast2list(ast, line_info).
| [line_info]) | 
ast2tuple(ast, line_info).
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