今天发现了一个奇怪的现象,直接上代码
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import sys
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from colorama import Fore, Back, Style
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def print_example():
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print(Fore.RED+ "1. This is the first sentence")
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long_str=' Blowing in the wind'
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print(Fore.WHITE + '2. long_str =', end='')
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#print('2. long_str= ', end='')
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print( long_str,file=sys.stderr)
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print(Fore.CYAN + "3. Do they printed in right order")
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print_example()
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打印出来的结果并不是我设想的顺序
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1. This is the first sentence
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Blowing in the wind
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2. long_str =3. Do they printed in right order
为什么stderr和stdout会打印到一起呢? 我的猜想也许跟stdout, stderr的缓冲机制有关
后来发现python 3.3 后print可以加flush参数, 这样就能得到我想要的打印次序
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import sys
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from colorama import Fore, Back, Style
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def print_example():
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print(Fore.RED+ "1. This is the first sentence")
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long_str=' Blowing in the wind'
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print(Fore.WHITE + '2. long_str =', end='',flush=True)
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#print('2. long_str= ', end='')
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print( long_str,file=sys.stderr)
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print(Fore.CYAN + "3. Do they printed in right order")
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print_example()
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打印出来如下
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1. This is the first sentence
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2. long_str = Blowing in the wind
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3. Do they printed in right order
最后附上参考资料如何使用python打印彩色
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