Programowanie

Jestem nowy w programowaniu w Pythonie i próbuję używać pipenv. Uruchomiłem polecenie pip install pipenv, które zakończyło się pomyślnie: ... Successfully built pipenv pathlib shutilwhich pythonz-bd virtualenv-clone Installing collected packages: virtualenv, pathlib, shutilwhich, backports.shutil-get-terminal-size, pythonz-bd, virtualenv-clone, pew, first, six, click, pip-tools, certifi, chardet, idna, urllib3, requests, pipenv ... Jednak po …

119 python  python-3.x  pip  pipenv 

Mam ciąg w formacie base64, który reprezentuje obraz PNG. Czy istnieje sposób na zapisanie tego obrazu w systemie plików jako plik PNG? Zakodowałem obraz używając flexa. Właściwie to otrzymuję na serwerze (nie widzę żadnego obrazu po żadnej z proponowanych metod :() 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119 python  image 

Jak zmienić nazwę okienka tmux?

119 tmux 

Próbuję sformatować bieżący czas przy użyciu tego formatu yyyyMMddHHmmss. t := time.Now() fmt.Println(t.Format("yyyyMMddHHmmss")) To jest wyjście: yyyyMMddHHmmss Jakieś sugestie?

119 time  go  format  timestamp 

Chciałbym dołączyć ciąg na początku każdej wartości we wspomnianej kolumnie ramki danych pandy (elegancko). Dowiedziałem się już, jak to zrobić i obecnie używam: df.ix[(df['col'] != False), 'col'] = 'str'+df[(df['col'] != False), 'col'] Wydaje się to cholernie nieeleganckie - czy znasz inny sposób (który może również dodaje znak do wierszy, w …

119 python  string  pandas  dataframe 

W VueJS możemy dodać lub usunąć element DOM za pomocą v-if: <button v-if="isRequired">Important Button</button> ale czy istnieje sposób na dodanie / usunięcie atrybutów elementu dom, np. dla następującego warunkowego ustawienia wymaganego atrybutu: Username: <input type="text" name="username" required> przez coś podobnego do: Username: <input type="text" name="username" v-if="name.required" required> Jakieś pomysły?

119 javascript  vue.js  vuejs2 

Właśnie zainstalowałem Python 3.6.1 dla MacOS X Kiedy próbuję uruchomić konsolę (lub cokolwiek uruchomić z Python3), pojawia się ten błąd: AttributeError: module 'enum' has no attribute 'IntFlag' $ /Library/Frameworks/Python.framework/Versions/3.6/bin/python3 Failed to import the site module Traceback (most recent call last): File "/usr/local/Cellar/python3/3.6.1/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site.py", line 544, in <module> main() File "/usr/local/Cellar/python3/3.6.1/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site.py", line …

119 python  python-3.x  enums  python-3.6  attributeerror 

Chcę zbudować obraz za pomocą docker-compose i ustawić dla niego określony tag. Dokumentacja mówi: Compose zbuduje i otaguje go wygenerowaną nazwą, a następnie użyje tego obrazu. Ale nie mogę znaleźć sposobu na określenie tagu i dla zbudowanych obrazów zawsze widzę tag „najnowsze”.

119 docker  docker-compose 

Więc poniższy kod jest w Angular 4 i nie mogę zrozumieć, dlaczego nie działa tak, jak oczekiwano. Oto fragment mojego programu obsługi: onUpdatingServerName(event: Event) { console.log(event); this.newserverName = event.target.value; //this wont work } Element HTML: <input type="text" class="form-control" (input)="onUpdatingServerName($event)"> Kod daje mi błąd: Właściwość „wartość” nie istnieje w typie „EventTarget”. …

119 javascript  angular  typescript 

Mam taki kod javascript: function justTesting() { promise.then(function(output) { return output + 1; }); } var test = justTesting(); Zawsze mam niezdefiniowaną wartość testu var. Myślę, że dzieje się tak, ponieważ obietnice nie zostały jeszcze rozwiązane… czy istnieje sposób na zwrócenie wartości z obietnicy?

119 javascript  promise 

Niedawno przeniosłem się do Pythona 3.5 i zauważyłem, że nowy operator mnożenia macierzy (@) czasami zachowuje się inaczej niż operator kropki numpy . Na przykład dla tablic 3D: import numpy as np a = np.random.rand(8,13,13) b = np.random.rand(8,13,13) c = a @ b # Python 3.5+ d = np.dot(a, b) …

119 python  numpy  matrix-multiplication  python-3.5 

Chcę mieć możliwość przypisania właściwości obiektu do wartości podanej jako klucz i wartość jako dane wejściowe, a mimo to nadal być w stanie określić typ wartości. Trochę trudno to wyjaśnić, więc ten kod powinien ujawnić problem: type JWT = { id: string, token: string, expire: Date }; const obj: JWT …

119 typescript  types 

Mam witrynę produkcyjną WordPress. Wyeksportowałem bazę danych za pomocą następujących poleceń: select database > export > custom > select all tables > select .zip compression > 'Go' Pobrałem plik example.sql.zip, ale kiedy przesyłam do mojego localhost, pojawia się ten błąd: phpMyAdmin - Error > Incorrect format parameter Próbowałem wyeksportować w …

119 database  mysql 

Wiem, że zadawano już podobne pytania. Ale uważam, że mój problem wynika z błędu, który popełniłem wcześniej, i dlatego jest inny: pozwól mi wyjaśnić. Wszystko działało sprawnie, jak mogłem: git add . wszystkie pliki z mojego lokalnego repozytorium. git commit -m "message here" aby dodać wiadomości do moich zatwierdzeń. git …

119 git  github  version-control  branch 

Pracuję nad projektem Java z Gradlew. Używam Ubuntu Linux jako mojego systemu operacyjnego. Kiedy uruchamiam „gradle”, to działa i podaje mi informacje. Ale kiedy uruchamiam "gradlew", wyświetla komunikat "Nie znaleziono polecenia 'gradlew', czy chodziło Ci o: Polecenie 'gradle' z pakietu 'gradle' (wszechświat) gradlew: nie znaleziono polecenia" Zrobiłem moje badania, mam …

119 java  linux  gradle  installation