The easiest way for the majority of users to install pandas is to install it as part of the Anaconda distribution, a cross
platform distribution for data analysis and scientific computing. This is the recommended installation method for most
users.
I
把dictd = {‘A’:0}转换成DataFrame，
首先，DataFrame的语法格式应为：
import pandas as pd
df = pd.DataFrame({'A':[0]})#'A'是columns，对应的是list
输出：
A
0 0
但是如果是：
df = pd.DataFrame({'A':0})#直接输入dict
会报错
ValueError: If using all scalar values, you must pass an index
解决办
