import pandas as pd
from pathlib import Path
df_gps = pd.read_csv("dummydata_gps.csv")
df_photo = pd.read_excel("dummydata_photo.xlsx")
print(df_photo)
#str.replace('置換前','置換後','最大置換回数')
df_photo=df_photo['date'].str.replace(':', '/',2)
print(df_photo)