python 创建txt每行写入

 txtPath=os.path.join(vocDir,"eval.txt")
    with open(txtPath,"w") as f:
        f.writelines("allGroundBoxNum:{}
".format(groundBoxNum))
        f.writelines("allDetectedBoxNum:{}
".format(detectedBoxNum))
        f.writelines("allDetectedBoxRightNum:{}
".format(detectedBoxRightNum))
        f.writelines("allDetectedBoxAndClassificationRightNum:{}
".format(detectedBoxAndClassificationRightNum))
        f.writelines("识别错误的框的个数:{}
".format(detectedBoxNum - detectedBoxRightNum))
        f.writelines("识别错误的框的个数/预测的框:{}
".format((detectedBoxNum - detectedBoxRightNum) / detectedBoxNum))
        f.writelines("识别对的框/所有的框:{}
".format(detectedBoxRightNum / groundBoxNum))
        f.writelines("框和分类都正确/所有的框:{}
".format(detectedBoxAndClassificationRightNum / groundBoxNum))
        for i in range(len(categories)):
            f.writelines("{}的Ground,Detected,DetectedRight个数分别为{},{},{},
".format(categories[i]["name"],
                                                                      allGroundClassNumDict[i + 1],
                                                                      allDetectedClassNumDict[i + 1],
                                                                      allDetectedClassRightNumDict[i + 1]))

w+表示写入，不存在则创建

写入也可以用python的format，太方便了