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For my 'intro to coding class', our assignment is to calculate how far (meters) light travels in one year. I currently have completed that, however I am having trouble converting my large answer into an exponent form. we are using the newest form of python on a website called MindTap. How would I go about converting my answer into exponent form?

Here is my code for the assignment 

secinyear = float(365*24*60**2)
rate = float(3*10**8)
cal = (secinyear * rate)

print("Light travels ", cal, "meters in a year.")

cal come out to be 9460800000000000.0. I wish to turn this into a proper exponent form such as 9.4608 x 10^15.

AEM1059
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2 Answers2

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Does something like this meet your needs? 

value = 2857434.93485
print("{:.2e}".format(value))

The result is 2.86e+06

Matthew Gaiser
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Try the string formatting method in python:

print(f"Light travels {cal:.2e} meters in a year.")

Output: 

Light travels 9.46e+15 meters in a year.
Toukenize
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