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file_input: (NEWLINE | stmt)* EOF;

funcdef: 'def' NAME parameters ':' suite;

parameters: '(' typedargslist? ')';

typedargslist: (tfpdef ('=' test)? (',' tfpdef ('=' test)?)*);

tfpdef: NAME ;

stmt: simple_stmt | compound_stmt;

simple_stmt: small_stmt NEWLINE;

small_stmt: expr_stmt | flow_stmt;

expr_stmt: testlist ( (augassign testlist) | ('=' testlist)*);

augassign: ('+=' | '-=' | '*=' | '/=' | '//=' | '%=' );

flow_stmt: break_stmt | continue_stmt | return_stmt;

break_stmt: 'break';

continue_stmt: 'continue';

return_stmt: 'return' (testlist)?;

compound_stmt: if_stmt | while_stmt | funcdef ;

if_stmt: 'if' test ':' suite ('elif' test ':' suite)* ('else' ':' suite)?;

while_stmt: 'while' test ':' suite;

suite: simple_stmt | NEWLINE INDENT stmt+ DEDENT;

test: or_test ;

or_test: and_test ('or' and_test)*;

and_test: not_test ('and' not_test)*;

not_test: 'not' not_test | comparison;

comparison: arith_expr (comp_op arith_expr)*;

comp_op: '<'|'>'|'=='|'>='|'<=' | '!=';

arith_expr: term (addorsub_op term)*;

addorsub_op: '+'|'-';

term: factor (muldivmod_op factor)*;

muldivmod_op: '*'|'/'|'//'|'%';

factor: ('+'|'-') factor | atom_expr;

atom_expr: atom trailer?;

trailer: '(' (arglist)? ')' ;

atom: (NAME | NUMBER | STRING+| 'None' | 'True' | 'False' | ('(' test ')'));

testlist: test (',' test)* (',')?;

arglist: argument (',' argument)* (',')?;

argument: ( test | test '=' test );