[英]Finding index locations in a list of tuples
I have a list of tuples that looks somewhat like this我有一个看起来有点像这样的元组列表
global_list = [('Joe','Smith'),('Singh','Gurpreet'),('Dee','Johnson'),('Ahmad','Iqbal')..........]
I want to find index location in global_list of我想在 global_list 中找到索引位置
The tuple could be ('First Name','Last Name') or ('Last Name','First Name').元组可以是 ('First Name','Last Name') 或 ('Last Name','First Name')。
Thanks in advance提前致谢
As I understood you want to find indexes.据我了解,您想查找索引。 In this situation you need to use
enumerate
.在这种情况下,您需要使用
enumerate
。
indexes_1 = []
indexes_2 = []
for i, tup in enumerate(global_list):
if "John" in tup:
indexes_1.append(i)
if "Richard" in tup or "Thomas" in tup or "Khan" in tup:
indexes_2.append(i)
You can use np.argwhere(np.array(gloabl_list) == name)[:,0]
.您可以使用
np.argwhere(np.array(gloabl_list) == name)[:,0]
。 To add in more conditions you can either do this for all the names or you can say:要添加更多条件,您可以对所有名称执行此操作,也可以说:
global_list = np.array(gloabl_list)
np.argwhere((global_list == name1) | (global_list == name2) ...)[:,0]
It seems like you might want a dictionary of names, with sets of indices for each name:似乎您可能想要一个名称字典,每个名称都有一组索引:
global_list = [('Joe', 'Smith'), ('Singh', 'Gurpreet'), ('Dee', 'Johnson'), ('Ahmad', 'Iqbal')]
name_dict = {}
for idx, (first, last) in enumerate(global_list):
if first not in name_dict:
name_dict[first] = set(idx)
else:
name_dict[first].add(idx)
if last not in name_dict:
name_dict[last] = set(idx)
else:
name_dict[last].add(idx)
Then, to search you could do:然后,搜索你可以这样做:
names = ['Joe', 'Johnson']
indices = set()
for name in names:
indices.update(name_dict.get(name, set()))
print(indices)
{0, 2}
print([global_list[i] for i in indices])
[('Joe', 'Smith'), ('Dee', 'Johnson')]
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