def isFloat(string):
    try:
        float(string)
        return True
    except ValueError:
        return False

def listToStr(list, sep = ", ", last_sep = " and "):
    l = len(list)
    if l > 0:
        res = str(list[0])
        for i in range(1, l - 1):
            res += (sep + list[i])
        if l > 1:
            res += (last_sep + list[l - 1])
    else:
        res = ""
    return res

def StgFromRound(round, rou_per_stg):
    return ((round - 1) // rou_per_stg) + 1


def DistributeInGroups(atoms, groups, sample, capacities):
    n = len(atoms)
    len_sample = len(sample)
    min_cap = min([capacities[s] for s in sample])

    i = 0
    bin = 0
    res = []
    while i < n - min_cap + 1:
        sam = sample[bin % len_sample]
        left = n - i
        cap = capacities[sam]
        if left >= cap:
            #partial = [[groups[sam], [atoms[j] for j in range(i,i+cap)]]]
            partial = [{'group':groups[sam], 'atoms':[atoms[j] for j in range(i,i+cap)]}]
            res = res + partial
            i += cap
        bin += 1
    if n - i > 0:
        res += [{'group':-1, 'atoms':[atoms[j] for j in range(i,n)]}]
    return res