block1.py

import os, glob
import pandas as pd

# read multiple files with SensorLog data
# adjust to your directory - I use iCloud directory on my Mac
path = os.path.expanduser("~/Library/Mobile Documents/com~apple~CloudDocs/SensorLogData")  
allFiles = glob.glob(path + "/*.csv")
frame = pd.DataFrame()
list_ = []

# read all files in directory
for file_ in allFiles:
  df = pd.read_csv(file_, index_col=None, header=0)
  list_.append(df)

# concat all files into one DataFrame
df_sensorData = pd.concat(list_, sort=True)