hydralit
1.0.14
Hydralit软件包是一个包装和模板项目，可将多个独立（或有些依赖）简化应用程序组合到多页应用程序中。
当前，该项目实现了主机应用程序HydraApp，每个儿童应用程序只需要是源自Hydraheadapp类而衍生的类，并实现单个简单的方法，run（）以获得最大的利润，或者您可以在功能上使用烧瓶样式的装饰器即可直接添加它们作为单独的简化页面。
转换现有应用程序时，您可以有效地将所有现有代码放入Run（）方法中，并创建源自Hydraheadapp的包装类别或在功能上放置装饰器。然后，您将父应用程序创建为HydraApp实例，将您的孩子应用程序添加到其中（请参阅示例Secure_app.py），并且只有几行代码将神奇地融合在一起。
可以从PYPI中安装水疗法：
pip install -U hydralit #when we import hydralit, we automatically get all of Streamlit
import hydralit as hy
app = hy . HydraApp ( title = 'Simple Multi-Page App' )
@ app . addapp ()
def my_home ():
hy . info ( 'Hello from app1' )
@ app . addapp ()
def app2 ():
hy . info ( 'Hello from app 2' )
#Run the whole lot, we get navbar, state management and app isolation, all with this tiny amount of work.
app . run ()当目标函数从菜单中选择该菜单和页面时，这种少量代码会创建一个菜单和页面。
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由于简化的执行模型，使用NAVBAR时使用内部NAV链接的能力是一击。这意味着内部链接将重定向到子女，但是，如果在儿童应用程序中提出了脚本重新运行请求（例如，更改小部件的值），则导航会反弹回到调用应用程序。您可以禁用Navbar，并且将出现简化的核心组件nav菜单，并且内部链接将按预期工作。
app = HydraApp ( title = 'Secure Hydralit Data Explorer' , favicon = "?" , hide_streamlit_markers = True , use_navbar = True , navbar_sticky = True )Hydralit Navbar已完全集成，主题意识和动画（如果愿意，可以将其关闭），只需添加您的孩子应用程序然后去，Navbar将自动出现。
开箱即用，在应用程序/页面之间导航时，您会得到一个不错的装载机/旋转器。您还可以创建自己的加载程序应用程序，并完全自定义其外观和加载时的每个部分，甚至根据目标应用程序创建不同的效果。请参阅Hydralit安全示例代码以查看可能的方法。
如果您有一些功能，并且希望它们像单独的页面一样运行，则可以在功能上快速使用烧瓶样式的装饰符。
#when we import hydralit, we automatically get all of Streamlit
import hydralit as hy
app = hy . HydraApp ( title = 'Simple Multi-Page App' )
@ app . addapp ( is_home = True )
def my_home ():
hy . info ( 'Hello from Home!' )
@ app . addapp ()
def app2 ():
hy . info ( 'Hello from app 2' )
@ app . addapp ( title = 'The Best' , icon = "?" )
def app3 ():
hy . info ( 'Hello from app 3, A.K.A, The Best ?' )
#Run the whole lot, we get navbar, state management and app isolation, all with this tiny amount of work.
app . run ()这种少量的代码创建了一个不错的自定义多页应用，如下所示。
您可以通过与位于Hydralit-示例存储库中的孩子一起运行两个示例应用程序来尝试一下。
hydralit_example > pip install -r requirements.txt
hydralit_example > streamlit run secure.app此代码示例直接来自简化示例数据资源管理器
import streamlit as st
import pandas as pd
import numpy as np
st . title ( 'Uber pickups in NYC' )
DATE_COLUMN = 'date/time'
DATA_URL = ( 'https://s3-us-west-2.amazonaws.com/'
'streamlit-demo-data/uber-raw-data-sep14.csv.gz' )
@ st . cache
def load_data ( nrows ):
data = pd . read_csv ( DATA_URL , nrows = nrows )
lowercase = lambda x : str ( x ). lower ()
data . rename ( lowercase , axis = 'columns' , inplace = True )
data [ DATE_COLUMN ] = pd . to_datetime ( data [ DATE_COLUMN ])
return data
data_load_state = st . text ( 'Loading data...' )
data = load_data ( 10000 )
data_load_state . text ( "Done! (using st.cache)" )
if st . checkbox ( 'Show raw data' ):
st . subheader ( 'Raw data' )
st . write ( data )
st . subheader ( 'Number of pickups by hour' )
hist_values = np . histogram ( data [ DATE_COLUMN ]. dt . hour , bins = 24 , range = ( 0 , 24 ))[ 0 ]
st . bar_chart ( hist_values )
# Some number in the range 0-23
hour_to_filter = st . slider ( 'hour' , 0 , 23 , 17 )
filtered_data = data [ data [ DATE_COLUMN ]. dt . hour == hour_to_filter ]
st . subheader ( 'Map of all pickups at %s:00' % hour_to_filter )
st . map ( filtered_data )我们还使用一个简单的应用程序与上面的演示结合。
import streamlit as st
import numpy as np
import pandas as pd
from data . create_data import create_table
def app ():
st . title ( 'Small Application with a table and chart.' )
st . write ( "See `apps/simple.py` to know how to use it." )
st . markdown ( "### Plot" )
df = create_table ()
st . line_chart ( df )您可以通过简单地将每个应用程序包装在氢吸收器中的类中，然后将所有代码放入Run（）方法中。
对于上述简化演示应用程序，这意味着所需的只是稍作修改，我们创建一个文件sample_app.py并添加;
import streamlit as st
import pandas as pd
import numpy as np
#add an import to Hydralit
from hydralit import HydraHeadApp
#create a wrapper class
class MySampleApp ( HydraHeadApp ):
#wrap all your code in this method and you should be done
def run ( self ):
#-------------------existing untouched code------------------------------------------
st . title ( 'Uber pickups in NYC' )
DATE_COLUMN = 'date/time'
DATA_URL = ( 'https://s3-us-west-2.amazonaws.com/'
'streamlit-demo-data/uber-raw-data-sep14.csv.gz' )
@ st . cache
def load_data ( nrows ):
data = pd . read_csv ( DATA_URL , nrows = nrows )
lowercase = lambda x : str ( x ). lower ()
data . rename ( lowercase , axis = 'columns' , inplace = True )
data [ DATE_COLUMN ] = pd . to_datetime ( data [ DATE_COLUMN ])
return data
data_load_state = st . text ( 'Loading data...' )
data = load_data ( 10000 )
data_load_state . text ( "Done! (using st.cache)" )
if st . checkbox ( 'Show raw data' ):
st . subheader ( 'Raw data' )
st . write ( data )
st . subheader ( 'Number of pickups by hour' )
hist_values = np . histogram ( data [ DATE_COLUMN ]. dt . hour , bins = 24 , range = ( 0 , 24 ))[ 0 ]
st . bar_chart ( hist_values )
# Some number in the range 0-23
hour_to_filter = st . slider ( 'hour' , 0 , 23 , 17 )
filtered_data = data [ data [ DATE_COLUMN ]. dt . hour == hour_to_filter ]
st . subheader ( 'Map of all pickups at %s:00' % hour_to_filter )
st . map ( filtered_data )
#-------------------existing untouched code------------------------------------------对于另一个小应用程序，我们可以通过将源自hydralit的hydraheadapp衍生的类包装并将所有代码放入Run（）方法中，可以很容易地转换为此，我们创建了一个file small_app.py并添加;
import streamlit as st
import numpy as np
import pandas as pd
from data . create_data import create_table
#add an import to Hydralit
from hydralit import HydraHeadApp
#create a wrapper class
class MySmallApp ( HydraHeadApp ):
#wrap all your code in this method and you should be done
def run ( self ):
#-------------------existing untouched code------------------------------------------
st . title ( 'Small Application with a table and chart.' )
st . markdown ( "### Plot" )
df = create_table ()
st . line_chart ( df )这些现在可以在Hydralit应用中使用。我们只需要创建一个简单的主机应用程序，该应用程序来自Hydralit的Hydraapp类，添加孩子，我们就完成了！我们创建一个文件host_app.py并添加;
from hydralit import HydraApp
import streamlit as st
from sample_app import MySampleApp
from small_app import MySmallApp
if __name__ == '__main__' :
#this is the host application, we add children to it and that's it!
app = HydraApp ( title = 'Sample Hydralit App' , favicon = "?" )
#add all your application classes here
app . add_app ( "Small App" , icon = "?" , app = MySmallApp ())
app . add_app ( "Sample App" , icon = "?" , app = MySampleApp ())
#run the whole lot
app . run ()这个超简单的示例是由3个文件组成的。
hydralit sample project
│ host_app.py
│ small_app.py
│ sample_app.py
hydralit sample project > pip install hydralit
hydralit sample project > streamlit run host.app下面显示了使用登录应用程序确保的主机应用程序的代码，整个示例位于hydralit-示例存储库中。
from hydralit import HydraApp
import streamlit as st
import apps
if __name__ == '__main__' :
over_theme = { 'txc_inactive' : '#FFFFFF' }
#this is the host application, we add children to it and that's it!
app = HydraApp (
title = 'Secure Hydralit Data Explorer' ,
favicon = "?" ,
hide_streamlit_markers = False ,
#add a nice banner, this banner has been defined as 5 sections with spacing defined by the banner_spacing array below.
use_banner_images = [ "./resources/hydra.png" , None ,{ 'header' : "<h1 style='text-align:center;padding: 0px 0px;color:black;font-size:200%;'>Secure Hydralit Explorer</h1><br>" }, None , "./resources/lock.png" ],
banner_spacing = [ 5 , 30 , 60 , 30 , 5 ],
use_navbar = True ,
navbar_sticky = False ,
navbar_theme = over_theme
)
#Home button will be in the middle of the nav list now
app . add_app ( "Home" , icon = "?" , app = apps . HomeApp ( title = 'Home' ), is_home = True )
#add all your application classes here
app . add_app ( "Cheat Sheet" , icon = "" , app = apps . CheatApp ( title = "Cheat Sheet" ))
app . add_app ( "Sequency Denoising" , icon = "?" , app = apps . WalshApp ( title = "Sequency Denoising" ))
app . add_app ( "Sequency (Secure)" , icon = "?" , app = apps . WalshAppSecure ( title = "Sequency (Secure)" ))
app . add_app ( "Solar Mach" , icon = "?️" , app = apps . SolarMach ( title = "Solar Mach" ))
app . add_app ( "Spacy NLP" , icon = "⌨️" , app = apps . SpacyNLP ( title = "Spacy NLP" ))
app . add_app ( "Uber Pickups" , icon = "?" , app = apps . UberNYC ( title = "Uber Pickups" ))
app . add_app ( "Solar Mach" , icon = "?️" , app = apps . SolarMach ( title = "Solar Mach" ))
#we have added a sign-up app to demonstrate the ability to run an unsecure app
#only 1 unsecure app is allowed
app . add_app ( "Signup" , icon = "?️" , app = apps . SignUpApp ( title = 'Signup' ), is_unsecure = True )
#we want to have secure access for this HydraApp, so we provide a login application
#optional logout label, can be blank for something nicer!
app . add_app ( "Login" , apps . LoginApp ( title = 'Login' ), is_login = True )
#specify a custom loading app for a custom transition between apps, this includes a nice custom spinner
app . add_loader_app ( apps . MyLoadingApp ( delay = 5 ))
#app.add_loader_app(apps.QuickLoaderApp())
#we can inject a method to be called everytime a user logs out
@ app . logout_callback
def mylogout_cb ():
print ( 'I was called from Hydralit at logout!' )
#we can inject a method to be called everytime a user logs in
@ app . login_callback
def mylogin_cb ():
print ( 'I was called from Hydralit at login!' )
#if we want to auto login a guest but still have a secure app, we can assign a guest account and go straight in
app . enable_guest_access ()
#--------------------------------------------------------------------------------------------------------------------
#if the menu is looking shit, use some sections
#check user access level to determine what should be shown on the menu
user_access_level , username = app . check_access ()
# If the menu is cluttered, just rearrange it into sections!
# completely optional, but if you have too many entries, you can make it nicer by using accordian menus
if user_access_level > 1 :
complex_nav = {
'Home' : [ 'Home' ],
'Intro ?' : [ 'Cheat Sheet' , "Solar Mach" ],
'Hotstepper ' : [ "Sequency Denoising" , "Sequency (Secure)" ],
'Clustering' : [ "Uber Pickups" ],
'NLP' : [ "Spacy NLP" ],
}
elif user_access_level == 1 :
complex_nav = {
'Home' : [ 'Home' ],
'Intro ?' : [ 'Cheat Sheet' , "Solar Mach" ],
'Hotstepper ' : [ "Sequency Denoising" ],
'Clustering' : [ "Uber Pickups" ],
'NLP' : [ "Spacy NLP" ],
}
else :
complex_nav = {
'Home' : [ 'Home' ],
}
#and finally just the entire app and all the children.
app . run ( complex_nav )
#(DEBUG) print user movements and current login details used by Hydralit
#---------------------------------------------------------------------
user_access_level , username = app . check_access ()
prev_app , curr_app = app . get_nav_transition ()
print ( prev_app , '- >' , curr_app )
print ( int ( user_access_level ), '- >' , username )
#---------------------------------------------------------------------您可以通过与位于Hydralit-示例存储库中的孩子一起运行两个示例应用程序来尝试一下。
hydralit_example > pip install -r requirements.txt
hydralit_example > streamlit run secure.app
