failed_runs_finder = re.compile(r'FAILEDRuns_') # I want to perform the operations on the dataframes which match this pattern.
list_dfs = list(filter(failed_runs_finder.findall, dir())) # this will get me the list with the names of the dataframes

['FAILEDRuns_0112',
 'FAILEDRuns_0121',
 'FAILEDRuns_0126',
 'FAILEDRuns_0129',
 'FAILEDRuns_0131',
 'FAILEDRuns_0134',
 'FAILEDRuns_0135',
 'FAILEDRuns_0137',
 'FAILEDRuns_0142',
 'FAILEDRuns_0153',
 'FAILEDRuns_0165',
 'FAILEDRuns_0171',
 'FAILEDRuns_0175']

for i in list_dfs:
    print(getattr(i, 'shape'))

AttributeError: 'str' object has no attribute 'shape'