常用语法
1. 根据多个字典创建
1.1. 实例：
import pandas as pd
data = [{'a': 1, 'b': 2},{'a': 5, 'b': 10, 'c': 20}]
df = pd.DataFrame(data)
print df1.2. 效果
a b c
0 1 2 NaN
1 5 10 20.0
import pandas as pd
data = [{'a': 1, 'b': 2},{'a': 5, 'b': 10, 'c': 20}]
df = pd.DataFrame(data)
print dfa b c
0 1 2 NaN
1 5 10 20.0