如何為可變參數函數創建默認關鍵字參數？

Question

假設我們有一個可變參數函數，如下所示：

def oofay(*args, **kwargs):
    return "\u2609_\u2609"

我們如何為關鍵字參數“hamburg”設置默認值？

一種解決方案如下：

def oofay(*args, **kwargs):
    kwargs.setdefault("hamburg", 99000)
    return "\u2609_\u2609"

但是，我想要在定義時間而不是調用時間評估的默認參數。

考慮以下示例：

color = "white"
get_fleece_color = lambda shoop: shoop + ", whose fleece was as " + color + " as snow."

print(get_fleece_color("Igor"))

# [... many lines of code later...]

color = "pink polka-dotted"
print(get_fleece_color("Igor's cousin, 3 times removed"))

輸出是：

Igor, whose fleece was white as snow.
Igor's cousin, 3 times removed Igor, whose fleece was as pink polka-dotted as snow.

我們不希望在我們的可變參數函數oofay粉紅色圓點。 那么......我們該怎么做呢？

Answer 1

歸功於Azat和wim

def oofay(*args, hamburg=99000, **kwargs):
    return "\u2609_\u2609"