Python 3在float32中追加数组？

Question

当我遍历我的数据，.csv文件并将每行的值分配给数组元素//我需要将值设置为float32，我该怎么做？这有效，但它们不是我想要的类型？底图抱怨，谢谢！

csvReader = csv.reader(stores)
header = next(csvReader, None)
latIndex = header.index("lati")
lonIndex = header.index("long")

# Make an empty list
coordList = []

# Loop through the lines in the file and get each coordinate
for row in csvReader:
    lat = row[latIndex]
    lon = row[lonIndex]
    result = (lat, lon)
    coordList.append(result)    # how to make it float32 ?

Answer 1

假设你的意思是numpy.float32（在vanilla python中没有任何东西叫它）：

lat = numpy.float32(row[latIndex])
lon = numpy.float32(row[lonIndex])