Python Maths Calculation on variables with scientific notation

Question

How to use Python to handle scientific notation and perform calculations? e.g:

a='1e+03'
b='1e+02'

How to sum a and b and get result of 1.1+03

score 1 · Answer 1 · answered Dec 21 '18 at 01:03

1

Python's built-in float supports scientific notation:

a = '1e+03'
b = '1e+02'

res = float(a) + float(b)  # 1100.0
print int(res)             # 1100

answered Dec 21 '18 at 01:03

jpp

score 1 · Answer 2 · answered Dec 21 '18 at 01:08

1

c = '{0:0.2e}'.format(float(a)+float(b))

In[10]: c
Out[10]: '1.10e+03'

answered Dec 21 '18 at 01:08

Osman Mamun

score 0 · Answer 3 · answered Dec 21 '18 at 01:06

0

Is usage of float necessary ? I just used as it is and it printed out 1100.0

a = 1e+03

b = 1e+02

print(a+b)

This post might be helpful if you want the result exactly as 1.1+03 . Display a decimal in scientific notation

answered Dec 21 '18 at 01:06

spnsp

It's necessary (or advisable) if your input is a string, as in OP's example. – jpp Dec 21 '18 at 01:37
Ah ok. I did not notice the edited question. previous version of the post did not have quotes. – spnsp Dec 21 '18 at 01:44

3 Answers3