In [ ]:

    

from collections import Counter
import re
regex=re.compile(".*<units>(.*?)</units>")

unitlist = []
with open('units.txt') as f:
    while True:
        line = f.readline()
        if line == '':
            break
        x = re.match(regex, line)
        unitlist.append(x.group(1).strip())
c = Counter(unitlist)
ulist = c.most_common()


    

In [ ]:

    

val = "/apps/youngsmoduluse/current/rappture/tool.xml:            <units>N</units>"
x = re.match(regex, val)
print(x, type(x))


    

In [ ]:

    

these_regex=".*<units>(.+?)</units>"
pattern=re.compile(these_regex)
x = re.match(pattern, val)
x.group(0)


    

In [ ]:

    

for name, count in ulist:
    print(name)


    

In [ ]:

    

len(ulist)


    

In [ ]:

    

from sympy import latex, sympify
latex(sympify('cm**2'))


    

In [ ]:

    

import ipywidgets as widgets
x = widgets.FloatText(value=42)
x


    

In [ ]:

    

def mycb(w):
    print("MYCB", w)
def mycb2(w):
    print("MYCB2", w)


    

In [ ]:

    

x.observe(mycb, names='value')


    

In [ ]:

    

x.observe(mycb2, names='value')


    

In [ ]:

    

x.unobserve_all()


    

In [ ]:

    

widgets.Checkbox?