Compound statements (multiple statements on the same line) are
    generally discouraged.

def compound_statements(logical_line):
    """
    Compound statements (multiple statements on the same line) are
    generally discouraged.
    """
    line = logical_line
    found = line.find(':')
    if -1 < found < len(line) - 1:
        before = line[:found]
        if (before.count('{') <= before.count('}') and # {'a': 1} (dict)
            before.count('[') <= before.count(']') and # [1:2] (slice)
            not re.search(r'\blambda\b', before)):     # lambda x: x
            return found, "E701 multiple statements on one line (colon)"
    found = line.find(';')
    if -1 < found:
        return found, "E702 multiple statements on one line (semicolon)"