Parses an input list of directory paths and returns a list of strings with information about the paths: See https://codefights.com/fight/iM6TDRMYJcbrTv23j/ for more details.

parse_directory_paths.py

from collections import OrderedDict
def parse_directory_paths(calls):
    calls_dict = OrderedDict()
    paths = []
    for c in calls:
        s = c.split("/")[1:]
        paths.append(s)
    for p in paths:
        if p[0] not in calls_dict:
            calls_dict[p[0]] = {}
            calls_dict[p[0]]["count"] = 1
            calls_dict[p[0]]["children"] = OrderedDict()
        else:
            calls_dict[p[0]]["count"] += 1
        if p[1] not in calls_dict[p[0]]["children"]:
            calls_dict[p[0]]["children"][p[1]] = {}
            calls_dict[p[0]]["children"][p[1]]["count"] = 1
            calls_dict[p[0]]["children"][p[1]]["children"] = OrderedDict()
        else:
            calls_dict[p[0]]["children"][p[1]]["count"] += 1
        if p[2] not in calls_dict[p[0]]["children"][p[1]]["children"]:
            calls_dict[p[0]]["children"][p[1]]["children"][p[2]] = {}
            calls_dict[p[0]]["children"][p[1]]["children"][p[2]]["count"] = 1
        else:
            calls_dict[p[0]]["children"][p[1]]["children"][p[2]]["count"] += 1
    
    output = []
    for project in calls_dict:
        p_obj = calls_dict[project]
        output.append("--{project} ({count})".format(project=project, count=p_obj["count"]))
        for subproject in p_obj["children"]:
            sp_obj = p_obj["children"][subproject]
            output.append("----{subproject} ({count})".format(subproject=subproject, count=sp_obj["count"]))
            for method in sp_obj["children"]:
                m_obj = sp_obj["children"][method]
                output.append("------{method} ({count})".format(method=method, count=m_obj["count"]))
    return output