Python列表推导式中使用if-else
data_list=[]
col=["a", "b", "c", "d"]
jdata={"a":1, "b":2, "c":3, "d":4}
for j in jdata:
result=[ j[h] and j.setdefault(h) if h in j.keys() else None for h in col]
data_list.append(tuple(result))
print(result)
data_list=[]
col=["a", "b", "c", "d"]
jdata={"a":1, "b":2, "c":3, "d":4}
for j in jdata:
result=[ j[h] and j.setdefault(h) if h in j.keys() else None for h in col]
data_list.append(tuple(result))
print(result)