Simple read eval print loop for python

simple_repl.py

PROMPT        = 'INPUT CODE > '
PROMPT_SIMPLE = '           > '

def eval_code(code):
    was_expression = True
    try:
        try:
            return eval(code, locals(), globals()), was_expression
        except SyntaxError:
            try:
                exec(code, locals(), globals())
            except SyntaxError as ex:
                print('bad syntax.\n', 'code:\n', code + '\n', ex)
                return None, False
            was_expression = False
            return None, was_expression
    except Exception as ex:
        print('eval caused an exception.\n', 'code:\n', code + '\n', ex)
        return None, False
def read():
    code = ''
    line = input(PROMPT).rstrip()
    code += line
    if line[-1] == ':' :
        line = input(PROMPT_SIMPLE)
        while line and line[0] in [' ', '\t']:
            code += '\n' + line
            line = input(PROMPT_SIMPLE)
    return code


while True:
    code = read()
    result, was_expression = eval_code(code)
    if was_expression:
        print(repr(result))