pandas AttributeError:'list' 对象没有属性 'size'
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AttributeError:'list' object has no attribute 'size'
提问by Raghavi
Here I am jus extracting a csv file and reading the "TV"values, calculating average and printing using tensorflow. But I am getting "AttributError" list has no attribute 'size' ". Can anyone please help me? Thanks in advance.
在这里，我只是提取一个 csv 文件并读取“TV”值，使用 tensorflow 计算平均值和打印。但是我收到“AttributError”列表没有属性“size”“。有人可以帮我吗？提前致谢。
import tensorflow as tf
import pandas
csv = pandas.read_csv("Advertising.csv")["TV"]
t = tf.constant(list(csv))
r = tf.reduce_mean(t)
sess = tf.Session()
s = list(csv).size
fill = tf.fill([s],r)
f = sess.run(fill)
print(f)
回答by Maxim
As summary of the discussion in the comments, here are valid ways of getting a length of the column in csv:
作为评论中讨论的摘要，以下是获取列长度的有效方法csv：
$ csv = pandas.read_csv("Advertising.csv")
$ print type(csv), len(csv)
<class 'pandas.core.frame.DataFrame'> 10
$ series = csv["TV"]
$ print type(series), len(series)
<class 'pandas.core.series.Series'> 10
$ as_list = list(series)
$ print type(as_list), len(as_list)
<type 'list'> 10
And here's how to calculate the average (without tensorflow session):
以下是计算平均值的方法（没有 tensorflow 会话）：
$ import numpy as np
$ print np.mean(series)
1.2
