def checkpropose():
global flag
for i in range(block.block('None').max_trans_num) :
if createnode.i_am.currentblock.translist[i] == None:
print False
#flag= False
break
# else we need to propose the current block after solving proof of work
proof_of_work.proofofwork(createnode.i_am.currentblock)
#print "Proof of work has been solved!"
# convert the current block to file
block.blocktofile(createnode.i_am.currentblock,blocktopropose)
#flag= True
print True
t.outlist[1].addr = createnode.teacher5publickey createnode.i_am.currentblock.add_trans_to_block(t) ##################### for i in range(block.MAXTRANS) : if createnode.i_am.currentblock.translist[i].hash == None: print "" print "not yet...." break # else we need to propose the current block after solving proof of work proof_of_work.proofofwork(createnode.i_am.currentblock) print "" print "Proof of work has been solved!" # convert the current block to file block.blocktofile(createnode.i_am.currentblock,"blocktopropose.txt") print "" print "Current block is ready to be proposed!" ##################### # to attach the block to the blockchain treestruct.addblock(createnode.i_am.currentblock, createnode.i_am) ''' t = transaction.transaction(1,2) t.sign = "teacher1sign" t.hash = 12360 t.inlist[0].hash = "12350" t.inlist[0].n = 0 t.inlist[0].sign = "signghf" t.inlist[0].pub = createnode.student5publickey