Finding versions with semantic-version library

versionInfo.py

for package in reqPack:
    finalPackageResult = {
        'name': package
    }

    # Find current installed version
    try:
        cur_ver = semver.Version.coerce(inPack[package])
    except ValueError:
        if re.search("^v[0-9].*$", inPack[package]):
            cur_ver = semver.Version.coerce(inPack[package][1:])
        else:
            finalPackageResult['msg'] = 'current installed version ' + inPack[package] + ' unreadable'
            finalPackageResult['status'] = 'failed'
            finalRes.append(finalPackageResult)
            continue

    # Get version constraints
    try:
        versionSpec = semver.NpmSpec(reqPack[package])
    except ValueError:
        finalPackageResult['msg'] = 'cannot understand constraint ' + reqPack[package]
        finalPackageResult['status'] = 'failed'
        finalRes.append(finalPackageResult)
        continue
    
    # Find Best version for given constraints
    cur_best = semver.Version('0.0.0')
    for versionStr in jsonMeta['versions']:
        try:
            version = semver.Version(versionStr)
            if version in versionSpec and version > cur_best:
                cur_best = version
        except ValueError: continue

    # Add to list if better version is available
    if cur_best > cur_ver:
        finalRes.append({
            'package':package,
            'constraint':reqPack[package],
            'current':inPack[package],
            'recommended':str(cur_best),
            'status': 'success'
        })