语法结果不同

Question

enter image description here 1。

def Age_makeup(Age):
    if ((Age == 0) | (Age >= 60)):
        return np.nan
    else:
        return Age

data["Age(clean)"] = data["Age"].apply(Age_makeup)
data[["Name","Age","Age(clean)"]].head()

enter image description here 2。

data.loc[(data["Age"] == 0) | (data["Age"] >= 60), ["Name","Age","Age(clean)"]].head()

我认为代码相同，结果也不同。 这些语法No.1和No.2有什么区别？ enter image description here enter image description here