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Изворен канал @pythonotes · Post #303 · 27 дек.

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Наверняка вы замечали, что в Python есть удобная функция для получения переменной окружения os.getenv(NAME) И её "сестра" для создания или изменения переменных окружения os.putenv(NAME, VALUE) Но почему-то putenv() не работает как должно. Энвайромент не обновляется! os.putenv('MYVAR', '1') print(os.getenv('MYVAR')) ... и ничего 😴 Почему так? На самом деле энвайромент обновляется, но это значение не добавляется в словарь os.environ. Откройте исходник функции os.getenv(). Это просто шорткат для os.environ.get() В то время как putenv() это built-in С-функция. Словарь os.environ (или точней класс из MutableMapping) создаётся из энвайромента в момент инициализации. Функция putenv() самостоятельно его не изменяет. В тоже время, когда вы создаёте или изменяете ключ в os.environ, автоматически вызывается putenv() в методе __setitem__(). То есть, технически putenv() всё делает верно, но в os.environ это не отражается. Можно проверить так: >>> os.putenv('MYVAR', '123') >>> os.system('python -c "import os;print(os.getenv(\'MYVAR\'))"') 123 Я объявил переменную в текущем процессе и вызвал дочерний процесс, который её унаследовал и получил в составе os.environ. Аналогично при удалении переменной вызывается еще одна built-in функция unsetenv(), удаляющая переменную из системы. Итого ▫️ Удобней всего явно обновлять переменные через os.environ ▫️ Есть способ неявно создать/удалить переменную через putenv/unsetenv, что не повлияет на os.environ но изменит энвайромент и передаст изменения сабпроцессам. Но так лучше не делать! ▫️os.environ это просто обертка для built-in функций putenv() и unsetenv(). #basic

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Journey to Fluency

@fluencyinenglish · Post #6321 · 10.08.2018 г., 17:20

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‍#song @fluencyinenglish ❇️What If I Was Nothing 🔹Song by All That Remains Just let it go, don’t want to haunt you anymore I can’t be sure I know just what we’re fight for I know that you’re scared and that you’re thinking I may go I’m not leaving, I’m not leaving @fluencyinenglish And if you’re thinking I might, might be lead astray Just remember this one question What if I was nothing, what if this is true? What if I was nothing, girl, nothing without you So what if I was angry, what did you think I’d do? I told you that I love you, girl, I’m nothing without you @fluencyinenglish I know it’s hard, it seems that we’ve worked at this so long Soft and foolish pride that tells us we’re not wrong I hear your voice, you tell me that you’ll never go And I believe it, I believe it And if you’re thinking I might, might be lead astray Just remember this one question @fluencyinenglish What if I was nothing, what if this is true? What if I was nothing, girl, nothing without you So what if I was angry, what did you think I’d do? I told you that I love you, girl, I’m nothing without you And we can keep this going on, we’ll make it work some way And every step, it makes us stronger every day And if you’re thinking I might, might be lead astray Just remember this one question @fluencyinenglish What if I was nothing, what if this is true? What if I was nothing, girl, nothing without you So what if I was angry, what did you think I’d do? I told you that I love you, girl, I’m nothing without you @fluencyinenglish What if I was nothing, what if this is true? What if I was nothing, girl, nothing without you So what if I was angry, what did you think I’d do? I told you that I love you, girl, I’m nothing without you @fluencyinenglish

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Journey to Fluency

@fluencyinenglish · Post #6309 · 05.08.2018 г., 18:30

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‍#song @fluencyinenglish A Showman's Life George Strait A showman's life is a smokey bar And the fevered chase of a tiny star It's a hotel room and a lonely wife From what I've seen of a showman's life Nobody told me about this part They told me all about the pretty girls And the wine and the money and the good times There's no mention of all the wear and tear On an old honky tonker's heart Well I might have known it But nobody told me about this part A boy will dream, as children do Of a Great White Way, until the dream comes true And a phony smile in a colored light Is all there is to a showman's life Nobody told me about this part They told me all about the pretty girls And the wine and the money and the good times There's no mention of all the wear and tear On an old honky tonker's heart Well I might have known it But nobody told me about this part And nobody told me about this part They told me all about the pretty girls And the wine and the money and the good times There's no mention of, all the wear and tear On an old honky tonker's heart Well I might have known it But nobody told me about this part Well I might have known it Nobody told me about this part Songwriters: Jesse Winchester @fluencyinenglish

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Journey to Fluency

@fluencyinenglish · Post #6305 · 04.08.2018 г., 18:45

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‍#song @fluencyinenglish @ieltsstrategies ✴️Better Than I Used to Be Genre: Country Artist: Tim McGraw I know how to hold a grudge I can send a bridge up in smoke And I can't count the people I've let down, the hearts I've broke You ain't gotta dig too deep If you wanna find some dirt on me But I'm learning who you've been Ain't who you've got to be It's gonna be an uphill climb Aw honey I won't lie @fluencyinenglish @ieltsstrategies I ain't no angel I still got a still few more dances with the devil I’m cleanin' up my act, little by little I’m getting there I can finally stand the man in the mirror I see I ain’t as good as I’m gonna get But I’m better than I used to be I’ve pinned a lot of demons to the ground I’ve got a few old habits left But there’s one or two I might need you to help me get Standin' in the rain so long has left me with a little rust But put some faith in me And someday you’ll see There’s a diamond under all this dust @fluencyinenglish @ieltsstrategies I ain't no angel I still got a still few more dances with the devil I’m cleanin' up my act, little by little I’m getting there I can finally stand the man in the mirror I see I ain’t as good as I’m gonna get But I’m better than I used to be I ain't no angel I still got a still few more dances with the devil But I’m cleanin' up my act, little by little I’m getting there I can finally stand the man in the mirror I see I ain’t as good as I’m gonna get But I’m better than I used to be Songwriters: Bryan Simpson / Ashley Gorley @fluencyinenglish @ieltsstrategies

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