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The above solution not worked in my case.Another way to read csv file and create tfRecord is shown below:

The feature set column names are :Sl.No:,Time,Height, Width,Mean,Std, Variance, Non-homogeneity, PixelCount, contourCount, Class.

Sample features that we get from dataset.csv:

Features= [5 'D' 268 497 13.706 863.4939999999999 29.385 0.0427 39675 10]

label : medium

def create_tf_example(features, label):

    tf_example = tf.train.Example(features=tf.train.Features(feature={
        'Time': tf.train.Feature(bytes_list=tf.train.BytesList(value=[features[1].encode('utf-8')])),
        'Height':tf.train.Feature(int64_list=tf.train.Int64List(value=[features[2]])),
        'Width':tf.train.Feature(int64_list=tf.train.Int64List(value=[features[3]])),
        'Mean':tf.train.Feature(float_list=tf.train.FloatList(value=[features[4]])),
        'Std':tf.train.Feature(float_list=tf.train.FloatList(value=[features[5]])),
        'Variance':tf.train.Feature(float_list=tf.train.FloatList(value=[features[6]])),
        'Non-homogeneity':tf.train.Feature(float_list=tf.train.FloatList(value=[features[7]])),
        'PixelCount':tf.train.Feature(int64_list=tf.train.Int64List(value=[features[8]])),
        'contourCount':tf.train.Feature(int64_list=tf.train.Int64List(value=[features[9]])),
        'Class':tf.train.Feature(bytes_list=tf.train.BytesList(value=[label.encode('utf-8')])),
    }))
    return tf_example
    
csv = pd.read_csv("dataset.csv").values
with tf.python_io.TFRecordWriter("dataset.tfrecords") as writer:
  for row in csv:
     features, label = row[:-1], row[-1]
     print features, label
     example = create_tf_example(features, label)
     writer.write(example.SerializeToString())
writer.close()

For more details click here.This works for me, hope it works.