Please help me with this question in Python.

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def is_thunder_split(n): """decide if the input integer n is a thunder-split number or not, return True if yes, False otherwise. also, print out using the specified format when n is a thunder-split number. """

nstr = str(n) #hint of the solution: loop over range(1,len(nstr)), get two integers at each step #and determine if n is a thunder-split number or not. #(another hint: for the printout, you may need to use str in order to show the leading 0's) # #(add code below to finish this part)

def thunder_split_num(b, a=10): """find and return all the thunder-split integers in [a,b], store them in a list (order the numbers in increasing order, you don't need to sort if you add the smaller number first). return this list at the end of this function"""

ts_int=[] ##add code below to finish the task

return ts_int

def thunder_split_num_fast(b, a=10): """faster way to find and return all the thunder-split integers in [a,b], store them in a list. return this list at the end """

ts_int=[] ##add code below to finish the task

return ts_int

if __name__=='__main__':

import time

#correctness tests: tList1 = thunder_split_num(10**4, a=110) tList2 = thunder_split_num(10**6, a=10*5) print(tList1, tList2) if tList1==[2025, 3025, 9801, 10000] and tList2[-2:-5:-1]==[998001, 494209, 88209]: print(" nice! passed initial test ") else: print(" ******* failed initial test ******* ")

t0 = time.time() a=10; bsmall = 10**7 print("this may take quite a while to run...") tList3 = thunder_split_num(bsmall, a) print('thunder_split_numbers found: {}'.format(tList3)) tslow = time.time()-t0 print('Found thunder split unumbers on [{},{:e}]: seconds used={}'.format(a, bsmall, tslow))

b=10**9 t0 = time.time() tList4 = thunder_split_num_fast(b, a) print(tList4) if tList4[:len(tList3)]==tList3 and tList4[-5:]==[60481729,99980001,100000000,300814336,493817284]: print('thunder_split_numbers found: {}'.format(tList4)) tfast = time.time()-t0 print('Fast version on [{},{:e}]: seconds used= {} '.format(a, b, tfast)) if tfast < 2: print(" Great!!! You solved the bonus problem perfectly!!! ") else: print(" Great! You solved the bonus problem! ")