从字典中抓取数据的Python高级技巧

Question

myDict = \
    {
        "R1": [10, 20],
        "R2": [20, 30],
        "K2": [20, 30],
        "N2": [20, 30],
        "N1": [20, 30],
     }

假设我用python编写了这本字典。

我想要：

x, y = enumerate(myDict["R1"])
#doing some job over data
#at here x will be 10 and y will 20
x, y = enumerate(myDict["R2"])
#doing some job over data

这只是一个小判决。但是我有太多的数据了。因此，与其为R1、R2、R3编写代码，还不如...有没有像这样的方法？

for x,y someCodeForR1toRn:
#doing some job over data

Answer 1

添加一个循环遍历数组的外部循环和一个仅使用R*的条件

for key, value in myDict.items():
    if not key.startswith("R"):
        continue
    print("Doing stuff for", key)
    for x, y in enumerate(value):
        print(x, y)

Answer 2

只需循环遍历字典项：

myDict = {"R1": [10, 20],"R2": [150, 250],"N2": [150, 250]}

def key_is_interesting(k):
    return k[0] == 'R'

for k,v in myDict.items():
    if key_is_interesting(k):
        print(f'Doing some work with {k} and {v}')

Answer 3

尝试：

for key, (x, y) in myDict.items():
    print(f'The key {key} has values x={x} and y={y}')