<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def python_like_exts():

 """Return a list of all python-like extensions"""

    exts = []
    for lang in languages.PYTHON_LIKE_LANGUAGES:
        exts.extend(list(languages.ALL_LANGUAGES[lang]))
    return ['.' + ext for ext in exts]