随笔分类 -  python学习笔记

摘要：代码： ```python a = [[1, 2], [3, 4]] # 扁平化 b = [i for item in a for i in item] # 或 import numpy as np npa = np.arrary(a) b = npa.ravel() # and b = npa.f 阅读全文

摘要：功能是为了找到关键字并返回关键字路径，当然只适用于字典中关键字是唯一的 第一种：关键字作为字典的键 ```python """字典格式： { "a": "", "b": { "b1": "" } } """ def search(theDict: dict, theKey: str): for ke 阅读全文

摘要：import numpy as np a = [0, 1, 2] a = np.array(a) a = a[a != 0].tolist() print(a) //a = [1, 2] 阅读全文