Previously, it was necessary to support older versions of Python for compatibility. F-strings were released in Python 3.6. Python 3.5 was marked as unsupported by the end of 2020, so now it's possible to start using f-strings safely for better readability and performance.
32 lines
635 B
Python
32 lines
635 B
Python
import sys
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import threading
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import time
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class Foo(threading.Thread):
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num = 10
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def __init__(self, x):
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self.__x = x
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threading.Thread.__init__(self)
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def log_index(self, index):
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sys.stderr.write(f'({index}) Thread: {self.__x}\n')
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sys.stderr.flush()
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def run(self):
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i = 0
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for _ in range(3):
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self.log_index(i)
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i += 1
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time.sleep(1)
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self.log_index(i)
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i += 1
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def application(environ, start_response):
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Foo(Foo.num).start()
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Foo.num += 10
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start_response('200 OK', [('Content-Length', '0')])
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return []
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