#Code
strFormatNum = "{:03d}".format(1) # 1 -> 001
print('strFormatNum = ', strFormatNum)
#Result
strFormatNum = 001
#Code
st_ele = "{:2.2f}".format(st_ele) # 1.232323 -> 1.23
#Code
'{:.2%}'.format(0.9995)
'99.95%'
Reference
https://stackoverflow.com/questions/31964930/python-string-formatting-with-percent-sign/31964980