jj-github-jj

import copy
from metadict import MetaDict
''' define data structure using dict Metadict'''
tl_dict=MetaDict ({f'L{n}': 0 for n in range (4)})
''' use dot access . Can create array of these
    data structure built using dict (MetaDIct allows dot access)
'''
def set_dict(d,values):
    d=copy.deepcopy(d)

jj-github-jj

jj-github-jj

jj-github-jj

from IPython.core.interactiveshell import InteractiveShell
InteractiveShell.ast_node_interactivity = "all"
from quantiphy import Quantity
a=Quantity('30MHz')
print (a) # 30 MHz
a.as_tuple()[0]
a.render() # '30 MHz'
float(a) # 30000000.0

jj-github-jj

# importing packages
# IF errors replace line 30 in cipher.py as follows
#  var_regex = re.compile(r"^\$*\w+\W")
import sys
import os
ytpath=r'https://www.youtube.com/watch?v=2SCOYFkvXWQ'
!{sys.executable} -m pip install pytube 
import pytube
from pytube import YouTube
  

jj-github-jj

def y_interpolate (xnew,x,y):
    from scipy.interpolate import interp1d
    y_interpolate_function = interp1d(x, y)
    return (y_interpolate_function(xnew))

jj-github-jj

#https://notebook.community/redlegjed/cheatsheets/holoviews_cheatsheet
#bokeh figure from holoview
bf=hv.render(p) #bf is bokeh figure object
bf

def formatter(value):
    return str(value) + ' days'

curve.relabel('Tick formatters').opts(xformatter=formatter, yformatter='$%.2f', width=500)

jj-github-jj

#force reload of specific module without restarting kernel. Useful for debug
import importlib
importlib.reload(<module name>)

# get path of python exe jupyter lab is using
!python --version
!jupyter kernelspec list
!jupyter --version

!{sys.executable} -m pip install -i https://test.pypi.org/simple/ --extra-index-url https://pypi.org/simple jjutil

jj-github-jj

def shelve_multiple(list_of_objects=[],fname=''):
    """ not providing filename, uses default current notebook name but slow ipynbname function
    shelve files are fname.shelf.dir,.data, and .bak(?) 
    copy these files with ipynb files to save restore objects without re-running
    """
    
    import ipynbname
    if fname =='':
        fname=ipynbname.name() #use note book name but way too slow so best to pass filename
    

jj-github-jj

# output html without code only outputs.  Use in ipynb file
#
#!pip install ipynbname
try :
    import ipynbname #utility to get current notebook name and path
except:
    !pip install ipynbname
    import ipynbname #utility to get current notebook name and path
nb_fname_full= ipynbname.name()+'.ipynb'
!jupyter nbconvert "{nb_fname_full}" --no-input  --to html