Fix doctest tracebacks

conversions/pressure_conversions.py

@@ -56,11 +56,7 @@ def pressure_conversion(value: float, from_type: str, to_type: str) -> float:
     0.019336718261000002
     >>> pressure_conversion(4, "wrongUnit", "atm")
     Traceback (most recent call last):
-      File "/usr/lib/python3.8/doctest.py", line 1336, in __run
-        exec(compile(example.source, filename, "single",
-      File "<doctest __main__.pressure_conversion[8]>", line 1, in <module>
-        pressure_conversion(4, "wrongUnit", "atm")
-      File "<string>", line 67, in pressure_conversion
+        ...
     ValueError: Invalid 'from_type' value: 'wrongUnit'  Supported values are:
     atm, pascal, bar, kilopascal, megapascal, psi, inHg, torr
     """

electronics/carrier_concentration.py

@@ -25,19 +25,19 @@ def carrier_concentration(
     ('hole_conc', 1440.0)
     >>> carrier_concentration(electron_conc=1000, hole_conc=400, intrinsic_conc=1200)
     Traceback (most recent call last):
-        File "<stdin>", line 37, in <module>
+        ...
     ValueError: You cannot supply more or less than 2 values
     >>> carrier_concentration(electron_conc=-1000, hole_conc=0, intrinsic_conc=1200)
     Traceback (most recent call last):
-        File "<stdin>", line 40, in <module>
+        ...
     ValueError: Electron concentration cannot be negative in a semiconductor
     >>> carrier_concentration(electron_conc=0, hole_conc=-400, intrinsic_conc=1200)
     Traceback (most recent call last):
-        File "<stdin>", line 44, in <module>
+        ...
     ValueError: Hole concentration cannot be negative in a semiconductor
     >>> carrier_concentration(electron_conc=0, hole_conc=400, intrinsic_conc=-1200)
     Traceback (most recent call last):
-        File "<stdin>", line 48, in <module>
+        ...
     ValueError: Intrinsic concentration cannot be negative in a semiconductor
     """
     if (electron_conc, hole_conc, intrinsic_conc).count(0) != 1:

electronics/electric_power.py

@@ -17,15 +17,15 @@ def electric_power(voltage: float, current: float, power: float) -> tuple:
     result(name='power', value=6.0)
     >>> electric_power(voltage=2, current=4, power=2)
     Traceback (most recent call last):
-        File "<stdin>", line 15, in <module>
+        ...
     ValueError: Only one argument must be 0
     >>> electric_power(voltage=0, current=0, power=2)
     Traceback (most recent call last):
-        File "<stdin>", line 19, in <module>
+        ...
     ValueError: Only one argument must be 0
     >>> electric_power(voltage=0, current=2, power=-4)
     Traceback (most recent call last):
-        File "<stdin>", line 23, in <modulei
+        ...
     ValueError: Power cannot be negative in any electrical/electronics system
     >>> electric_power(voltage=2.2, current=2.2, power=0)
     result(name='power', value=4.84)

maths/nevilles_method.py

@@ -31,8 +31,7 @@ def neville_interpolate(x_points: list, y_points: list, x0: int) -> list:
     104.0
     >>> neville_interpolate((1,2,3,4,6), (6,7,8,9,11), '')
     Traceback (most recent call last):
-      File "<stdin>", line 1, in <module>
-      ...
+        ...
     TypeError: unsupported operand type(s) for -: 'str' and 'int'
     """
     n = len(x_points)