def help(local="all"):
print()
print("Arithmetic:")
print("a+b : Add.")
print("a-b : Subtract.")
print("a*b : Multiply.")
if local == "all" or local == "met":
print("a:b : Divide.")
if local == "imp" or local == "py":
print("a/b : Divide.")
if local == "py":
print("a**n : Power.")
if local == "all" or local == "met" or local == "imp":
print("a^n : Power.")
print("Va : Square root.")
print("nVa : nth root.")
print("LOGa : Logarithm to base 10.")
print("LOGn;a : Logarithm to base n.")
print("LNa : Natural logarithm..")
print("a! : Factorial.")
print("ABSa : Absolute value.")
if local == "all" or local == "met":
print("a,b : Comma.")
if local == "imp" or local == "py":
print("a.b : Dot.")
print("() : Brackets.")
print("[] : Squared brackets.")
print()
print("Goniometric functions:")
print("SINa : Sine.")
print("COSa : Cosine.")
print("TANa : Tangent.")
print("COTa : Cotangent.")
print("SECa : Secant.")
print("CSCa : Cosecant.")
print("ASINa : Arcsine.")
print("ACOSa : Arccosine.")
print("ATANa : Arctangent.")
print("ACOTa : Arccotangent.")
print("ASECa : Arcsecant.")
print("ACSCa : Arccosecant.")
print("DEGa : Convert radials to degrees.")
print()
print("Logic:")
print("~a : Negation of a.")
print("a == b : a equal to b?")
print("a != b : a different from b?")
print("a < b : a lighter than b?")
print("a <= b : a lighter than or equal to b?")
print("a > b : a greater than b?")
print("a >= b : a greater than or equal to b?")
print()
print("Constants:")
print("pi : Constant Pi.")
print("tau : Constant Tau (2pi).")
print("phi : The golden ratio.")
print("inf : Infinity.")
print("e : Euler's constant.")
print()
print("Miscellaneous:")
print("a := * : Save * to variable a.")
print(">DMS : (on end) Convert to a°b'c\".")
print(">RAD : (on end) Convert to radians.")
print(">INT : (on end) Convert to an integer.")
print(">DEC : (on end) Do not round.")
print(">DECn : (on end) Round to n decimals.")
print(">ACC : (on end) Convert to a fraction (approximation).")
print("_ : Most recent input.")
print("inf : Infinity.")
print("e : Euler's constant.")
print()
print("Miscellaneous:")
print("a := * : Save * to variable a.")
print(">DMS : (on end) Convert to a°b'c\".")
print(">RAD : (on end) Convert to radians.")
print(">INT : (on end) Convert to an integer.")
print(">DEC : (on end) Do not round.")
print(">DECn : (on end) Round to n decimals.")
print(">ACC : (on end) Convert to a fraction (approximation).")
print("_ : Most recent input.")
title(i18n.t("MPL Interactive Prompt (c) 2015 Evert Provoost"))
print("MPL Interactive Prompt (c) 2015 Evert Provoost")
mplenv = mpl(opt={'dec': 5, 'acc': True, 'todms': False})
while True:
cmd = input(">? ").lower()
if cmd == "help" or cmd == "?":
print(">! Help for MPL:")
print("cls : Clear the screen.")
help()
elif cmd == "cls":
cls()
elif cmd == "exit":
sys.exit()