這個想法是創建一個字典,它將字符串映射到indeces。在下面有一個小類重載「[]」 - 運營商:
class ArrayStrIdx:
""" 2D Array with string as Indeces
Usage Example::
AA = ArrayStrIdx()
AA["word1", "word3"] = 99
print(AA["word2", "word5"])
"""
cols ="word1 word2"
rows ="word3 word4 word5"
dd = [[10,11,12],[20,21,22]] # data
def __init__(self):
""" Constructor builds dicts for indexes"""
self.ri = dict([(w,i) for i,w in enumerate(self.rows.split())])
self.ci = dict([(w,i) for i,w in enumerate(self.cols.split())])
def _parsekey(self, key):
""" Convert index key to indeces for ``self.dd`` """
w0, w1 = key[0], key[1]
return self.ci[w0], self.ri[w1]
def __getitem__(self, key):
""" overload [] operator - get() method"""
i0, i1 = self._parsekey(key)
return self.dd[i0][i1]
def __setitem__(self, key, value):
""" overload [] operator - set() method """
i0, i1 = self._parsekey(key)
self.dd[i0][i1] = value
更新:擴展答案,讓像AA["word1", "word3"] = 23
。
'self.table = [[ ],[]]' – hjpotter92
你也許可以使用兩個字符串的字典和元組作爲鍵。 –