关于OpenMV文件写入的问题

[2zqg]

想把识别到的简单数据直接写入一个文本文件，但报错

while(True):
    clock.tick()
    img = sensor.snapshot()
    f = open("test.txt")
    for tag in img.find_apriltags(families=tag_families): # defaults to TAG36H11 without "families".
        img.draw_rectangle(tag.rect(), color = (255, 0, 0))
        img.draw_cross(tag.cx(), tag.cy(), color = (0, 255, 0))
        print_args = (family_name(tag), tag.id(), (180 * tag.rotation()) / math.pi)
        id = tag.id()
        f.write(id)

[kidswong999]

请提供全部的代码，否则我没办法测试。

[2zqg]

import sensor, image, time, math, pyb

sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QQVGA) # we run out of memory if the resolution is much bigger...
sensor.skip_frames(time = 2000)
sensor.set_auto_gain(False)  # must turn this off to prevent image washout...
sensor.set_auto_whitebal(False)  # must turn this off to prevent image washout...
clock = time.clock()

tag_families = 0
tag_families |= image.TAG16H5 # comment out to disable this family
tag_families |= image.TAG25H7 # comment out to disable this family
tag_families |= image.TAG25H9 # comment out to disable this family
tag_families |= image.TAG36H10 # comment out to disable this family
tag_families |= image.TAG36H11 # comment out to disable this family (default family)
tag_families |= image.ARTOOLKIT # comment out to disable this family

def family_name(tag):
    if(tag.family() == image.TAG16H5):
        return "TAG16H5"
    if(tag.family() == image.TAG25H7):
        return "TAG25H7"
    if(tag.family() == image.TAG25H9):
        return "TAG25H9"
    if(tag.family() == image.TAG36H10):
        return "TAG36H10"
    if(tag.family() == image.TAG36H11):
        return "TAG36H11"
    if(tag.family() == image.ARTOOLKIT):
        return "ARTOOLKIT"

while(True):
    clock.tick()
    img = sensor.snapshot()
    f = open("test.txt")
    for tag in img.find_apriltags(families=tag_families): # defaults to TAG36H11 without "families".
        img.draw_rectangle(tag.rect(), color = (255, 0, 0))
        img.draw_cross(tag.cx(), tag.cy(), color = (0, 255, 0))
        print_args = (family_name(tag), tag.id(), (180 * tag.rotation()) / math.pi)
        #print("Tag Family %s, Tag ID %d, rotation %f (degrees)" % print_args)
        id = tag.id()
        f.write(id)        
    #print(clock.fps())

[2zqg]

@kidswong999 麻烦了

[kidswong999]

需要把id从数字变为字符串，然后写入文件。
f.write(str(id))

PS：你这个代码。。。只open，不close啊。

[2zqg]

@kidswong999 谢提醒，close了 但改为写入字符串就又出现了了不知名错误……

[kidswong999]

f = open("test.txt",mode='wt')

https://cn.bing.com/search?q=python3写入文件&qs=n&form=QBLH&sp=-1&pq=python3写入wen&sc=0-12&sk=&cvid=D6664F461FB04FA08698FA20A8A4091F

[2zqg]

@kidswong999 感谢