In [20]:

    

from __future__ import print_function
from ipywidgets import interact, interactive, fixed
import ipywidgets as widgets


    

In [21]:

    

def f(x):
    return x


    

In [22]:

    

interact(f, x=10);


    

    













    






10

In [23]:

    

interact(f, x=True);


    

    













    






True

In [24]:

    

interact(f, x='Hi there!');


    

    













    






'Hi there!'

In [25]:

    

@interact(x=True, y=1.0)
def g(x, y):
    return (x, y)


    

    













    






(True, 1.0)

In [26]:

    

def h(p, q):
    return (p, q)


    

In [27]:

    

interact(h, p=5, q=fixed(20));


    

    













    






(5, 20)

In [28]:

    

widgets.IntSlider(min=-10,max=30,step=1,value=10);


    

In [29]:

    

interact(f, x=widgets.IntSlider(min=-10,max=30,step=1,value=10));


    

    













    






10

In [30]:

    

interact(f, x=(0,4));


    

    













    






2

In [31]:

    

interact(f, x=(0,8,2));


    

    













    






4

In [32]:

    

interact(f, x=(0.0,10.0));


    

    













    






5.0

In [33]:

    

interact(f, x=(0.0,10.0,0.01));


    

    













    






4.99

In [34]:

    

@interact(x=(0.0,20.0,0.5))
def h(x=5.5):
    return x


    

    













    






5.5

In [35]:

    

interact(f, x=['apples','oranges']);


    

    













    






'apples'

In [36]:

    

interact(f, x={'one': 10, 'two': 20});


    

    













    






10

In [37]:

    

def anno_func(ham: str, eggs: str = 'eggs') -> str:
    print("Annotations:", anno_func.__annotations__)
    print("Arguments:", ham, eggs)
    return ham + ' and ' + eggs


    

In [38]:

    

anno_func('lulu')


    

    




Annotations: {'return': <class 'str'>, 'ham': <class 'str'>, 'eggs': <class 'str'>}
Arguments: lulu eggs






    
Out[38]:





'lulu and eggs'

In [39]:

    

anno_func.__annotations__


    

    
Out[39]:





{'eggs': str, 'ham': str, 'return': str}

In [40]:

    

from IPython.utils.py3compat import annotate


    

In [41]:

    

@annotate(x=True)
def f(x):
    return x


    

In [42]:

    

interact(f);


    

    













    






True

In [43]:

    

def f(a, b):
    return a+b


    

In [44]:

    

w = interactive(f, a=10, b=20)


    

In [45]:

    

type(w)


    

    
Out[45]:





ipywidgets.widgets.widget_box.Box

In [46]:

    

w.children


    

    
Out[46]:





(<ipywidgets.widgets.widget_int.IntSlider at 0x38407e5710>,
 <ipywidgets.widgets.widget_int.IntSlider at 0x38407fff98>)

In [47]:

    

from IPython.display import display
display(w)


    

    













    






30

In [48]:

    

w.kwargs


    

    
Out[48]:





{'a': 10, 'b': 20}

In [49]:

    

def slow_function(i):
    print(int(i),list(x for x in range(int(i)) if
                str(x)==str(x)[::-1] and
                str(x**2)==str(x**2)[::-1]))
    return


    

In [50]:

    

%%time
slow_function(1e6)


    

    




1000000 [0, 1, 2, 3, 11, 22, 101, 111, 121, 202, 212, 1001, 1111, 2002, 10001, 10101, 10201, 11011, 11111, 11211, 20002, 20102, 100001, 101101, 110011, 111111, 200002]
Wall time: 2.68 s

In [51]:

    

from ipywidgets import FloatSlider

interact(slow_function,i=FloatSlider(min=1e5, max=1e7, step=1e5))


    

    













    




4800000 [0, 1, 2, 3, 11, 22, 101, 111, 121, 202, 212, 1001, 1111, 2002, 10001, 10101, 10201, 11011, 11111, 11211, 20002, 20102, 100001, 101101, 110011, 111111, 200002, 1000001, 1001001, 1002001, 1010101, 1011101, 1012101, 1100011, 1101011, 1102011, 1110111, 1111111, 2000002, 2001002]

In [52]:

    

# %%writefile -a test.py
interact(slow_function,i=FloatSlider(min=1e5, max=1e7, step=1e5),__manual=True)


    

    













    




3700000 [0, 1, 2, 3, 11, 22, 101, 111, 121, 202, 212, 1001, 1111, 2002, 10001, 10101, 10201, 11011, 11111, 11211, 20002, 20102, 100001, 101101, 110011, 111111, 200002, 1000001, 1001001, 1002001, 1010101, 1011101, 1012101, 1100011, 1101011, 1102011, 1110111, 1111111, 2000002, 2001002]

In [53]:

    

# %%writefile -a test.py
interact(slow_function,i=FloatSlider(min=1e5, max=1e7, step=1e5,continuous_update=False))


    

    













    




8000000 [0, 1, 2, 3, 11, 22, 101, 111, 121, 202, 212, 1001, 1111, 2002, 10001, 10101, 10201, 11011, 11111, 11211, 20002, 20102, 100001, 101101, 110011, 111111, 200002, 1000001, 1001001, 1002001, 1010101, 1011101, 1012101, 1100011, 1101011, 1102011, 1110111, 1111111, 2000002, 2001002]

In [54]:

    

# %%writefile -a test.py

x_widget = FloatSlider(min=0.0, max=10.0, step=0.05)
y_widget = FloatSlider(min=0.5, max=10.0, step=0.05, value=5.0)

# When y_widget's value changes, 
#     call the update_x function
#     set the x_widget's max value to be two times the y_widget's value

def update_x_range(*args):
    x_widget.max = 2.0 * y_widget.value

y_widget.observe(update_x_range, 'value')

def printer(x, y):
    print(x, y)
interact(printer,x=x_widget, y=y_widget)


    

    













    




2.7 10.0

In [ ]: