python 3在float32中追加數組？

Question

當我遍歷數據，.csv文件並將每行的值分配給數組元素時，//我需要將值設置為float32，該怎么做？ 這有效，但是它們不是我想要的類型嗎？ 底圖抱怨，謝謝！

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

假設您的意思是numpy.float32（香草python中沒有這樣的名稱）：

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