import ast with open('example.py') as f: source_code = f.read() tree = ast.parse(source_code)
import ast code_snippet = 'print("Hello, world!")' tree = ast.parse(code_snippet)
import ast def add_print_statement(node): new_node = ast.parse('print("hello")').body[0] node.body.insert(0, new_node) return node code_snippet = 'x = 1\ny = 2\nz = x + y' tree = ast.parse(code_snippet) modified_tree = ast.fix_missing_locations(add_print_statement(tree))In this example, we define a function 'add_print_statement' that adds a print statement to the beginning of a given AST node. We then parse a Python code snippet 'x = 1\ny = 2\nz = x + y' and modify the AST by adding a print statement to the beginning. Overall, Python parser is a useful library for analyzing and modifying Python source code. It is included in the standard Python library and doesn't require any external package.