Pandas problem

df1
updated_at	df1_value
2020-02-03	345
2020-02-04	456
...			...
2020-03-02	123


df2
updated_at	df2_value
2020-02-03	78
2020-02-04	35
...			...
2020-03-02	98


df3
updated_at	df3_value
2020-02-03	5
2020-02-04	67
...			...
2020-03-02	320


...


df10002
updated_at	df10002_value
2020-02-03	68
2020-02-04	125
...			...
2020-03-02	453



+++++++++++++++++++++++++++++++++++++++
what I want to get

df
updated_at	df1_value 	df2_value 	df3_value 	...		df10002_value
2020-02-03	5			78			5			...		68
2020-02-04	67			35			67			...		125
...			...			...			...			...		...
2020-03-02	320			98			320			...		453