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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_unyielding_tcids(log_str):
 """Extract the set of tcids for which no statements were created."""

    tcid_strs = re.findall('INFO: \[.*?\].*? - Got no statements for (\d+).*',
                           log_str)
    return {int(tcid_str) for tcid_str in tcid_strs}