Sunbelt Computer Software

PL/B Language Development and Support

python/electronics/electric_conductivity.py at master · althetinkerer/python · GitHub

73 lines (67 loc) · 2.51 KB

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

from __future__ import annotations

ELECTRON_CHARGE = 1.6021e-19 # units = C

def electric_conductivity(

conductivity: float,

electron_conc: float,

mobility: float,

) -> tuple[str, float]:

"""

This function can calculate any one of the three -

1. Conductivity

2. Electron Concentration

3. Electron Mobility

This is calculated from the other two provided values

Examples -

>>> electric_conductivity(conductivity=25, electron_conc=100, mobility=0)

('mobility', 1.5604519068722301e+18)

>>> electric_conductivity(conductivity=0, electron_conc=1600, mobility=200)

('conductivity', 5.12672e-14)

>>> electric_conductivity(conductivity=1000, electron_conc=0, mobility=1200)

('electron_conc', 5.201506356240767e+18)

>>> electric_conductivity(conductivity=-10, electron_conc=100, mobility=0)

Traceback (most recent call last):

...

ValueError: Conductivity cannot be negative

>>> electric_conductivity(conductivity=50, electron_conc=-10, mobility=0)

Traceback (most recent call last):

...

ValueError: Electron concentration cannot be negative

>>> electric_conductivity(conductivity=50, electron_conc=0, mobility=-10)

Traceback (most recent call last):

...

ValueError: mobility cannot be negative

>>> electric_conductivity(conductivity=50, electron_conc=0, mobility=0)

Traceback (most recent call last):

...

ValueError: You cannot supply more or less than 2 values

>>> electric_conductivity(conductivity=50, electron_conc=200, mobility=300)

Traceback (most recent call last):

...

ValueError: You cannot supply more or less than 2 values

"""

if (conductivity, electron_conc, mobility).count(0) != 1:

raise ValueError("You cannot supply more or less than 2 values")

elif conductivity < 0:

raise ValueError("Conductivity cannot be negative")

elif electron_conc < 0:

raise ValueError("Electron concentration cannot be negative")

elif mobility < 0:

raise ValueError("mobility cannot be negative")

elif conductivity == 0:

return (

"conductivity",

mobility * electron_conc * ELECTRON_CHARGE,

)

elif electron_conc == 0:

return (

"electron_conc",

conductivity / (mobility * ELECTRON_CHARGE),

)

else:

return (

"mobility",

conductivity / (electron_conc * ELECTRON_CHARGE),

)

if __name__ == "__main__":

import doctest

doctest.testmod()