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"""
Benchmarks for pandas at the package-level.
"""
import subprocess
import sys
class TimeImport:
def time_import(self):
# on py37+ we the "-X importtime" usage gives us a more precise
# measurement of the import time we actually care about,
# without the subprocess or interpreter overhead
cmd = [sys.executable, "-X", "importtime", "-c", "import pandas as pd"]
p = subprocess.run(cmd, stderr=subprocess.PIPE)
line = p.stderr.splitlines()[-1]
field = line.split(b"|")[-2].strip()
total = int(field) # microseconds
return total
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