techsrefa.blogg.se - Convert string to float python

#CONVERT STRING TO FLOAT PYTHON SERIAL NUMBER#

Was an early convention established from electrical engineering that now presents a technically expensive area toĬhange.

Standard mathematics treatments typically use i to denote an imaginary number.

What do you expect 4j to be? What about 4 j or 4 + j?.What do you expect 1 + 2j + 3 to produce?.Why do you think Python uses j instead of i for the imaginary part?.In Python 3, the // operator performs integer (whole-number) floor division, the / operator performs floating-pointĭivision, and the % (or modulo) operator calculates and returns the remainder from integer division:

Floating point number, since an average is likely to have a fractional part.Choose floating point to represent population as large aggregates (eg millions), or integer to represent population in units of individuals.This will vary! How do you define a specimen’s age? whole days since collection (integer)? date and time (string)?.

#CONVERT STRING TO FLOAT PYTHON SERIAL NUMBER#

Character string if serial number contains letters and numbers, otherwise integer if the serial number consists only of numerals.Floating point, since fractional days are required.Integer, since the number of days would lie between 1 and 365.Average population of a city over time.

Serial number of a piece of lab equipment.

Time elapsed from the start of the year until now in days.

Number of days since the start of the year.

For example, in # 1, when would counting days with a floating point variable make more sense than using an integer? Would you use to represent each of the following? Try to come up with more than one good answer for each problem. What type of value (integer, floating point number, or character string)