Python库 | CASPy3-2.0.0.tar.gz

[](https://travis-ci.org/joemccann/dillinger) # CASPy _A program that provides a GUI and a CLI to SymPy, a symbolic computation and computer algebra system Python library._ <p align="center"> <img src="https://i.imgur.com/F7wfzQt.png" alt="CASPY logo"> </p> ## Installing Install with `pip`. ``` pip install caspy3 ``` ## Usage To start the GUI ``` caspy start ``` ### Command-line tool ``` Usage: caspy [OPTIONS] COMMAND [ARGS]... Options: --help Show this message and exit. Commands: deriv Derive a function Usage: caspy deriv EXPRESSION VARIABLE [ORDER]... diff-eq Solves a differential equation equation. eq Solves a normal equation. eval Evaluates an expression. exp Expandes an expression. integ Calculate definite and indefinite integrals of expressions. limit Calculate the limit of an expression. pf Retreives the prime factors of an positive integer. simp Simplifies an expression. start Start the GUI sys-eq Solves a system of equations. web Choose a number from a list of usable maths websites and open it... ``` #### Flags `-p, --preview`, Previews instead of calculating <br> `-o, --output-type`, Select output type, 1 for pretty; 2 for latex and 3 for normal <br> `-u, --use-unicode`, Use unicode for symbols <br> `-l, --line-wrap`, Use line wrap on answer <br> #### Arguments `-s, --use-scientific`, Notate approximate answer with scientific notation, argument is accuracy <br> `-a --accuracy`, Accuracy of evaluation <br> `-c --copy`, Copies the answer. 1 for exact_ans and 2 for approx_ans and 3 for a list of [exact_ans, approx_ans] <br> #### Equation specific arguments `-d --domain`, Give domain to solve for <br> `-v --verify-domain`, Filter out any solutions that isn't in domain. Doesn't work with solveset. This flag must be set in order for domain to work if it solves with solve and not solveset. Needed for system of equations <br> #### deriv ``` Derive a function Usage: caspy deriv EXPRESSION VARIABLE [ORDER] [AT_POINT] Example(s): >>> caspy deriv x**x x >>> caspy deriv sin(1/x) x 3 pi ``` #### eq ``` Solves a normal equation. Separate equation by either a space or a =, but not both. Usage: eq LEFT_EXPRESSION RIGHT_EXPRESSION VARIABLE_TO_SOLVE_FOR [SOLVE_TYPE] Example(s): >>> caspy eq x**x 2 x >>> caspy eq sin(x)=1 x -st ``` #### diff-eq ``` Solves a differential equation equation. Separate equation by either a space or a =, but not both. Usage: diff-eq LEFT_EXPRESSION RIGHT_EXPRESSION FUNCTION_TO_SOLVE_FOR [HINT] Example(s): >>> caspy diff-eq f'(x) 1/f(x) f(x) >>> caspy diff-eq f''(x)+3*f'(x)=x**2 f(x) ``` #### sys-eq ``` Solves a system of equations. Takes number of equations as argument, then will prompt user for all equations Usage: sys-eq NO_OF_EQUATIONS Example(s): >>> caspy sys-eq 5 >>> caspy sys-eq 3 -d Integers ``` #### eval ``` Evaluates an expression. After expression you can also subtitute your variables with a value. To substitute, simply type the variable to substitute followed by the value separated by a space. For example: >>> 3**(x+y) x 3 y 5 => 3**((3)+(5)) => 6561 Usage: eval EXPRESSION [VARS_SUB ... ] Example(s): >>> caspy eval exp(pi)+3/sin(6) >>> caspy eval 3**x x 3 ``` #### exp ``` Expandes an expression. Usage: exp EXPRESSION Example(s): >>> caspy exp (a+b-c)**3 ``` #### integ ``` Calculate definite and indefinite integrals of expressions. Usage: caspy integ EXPRESSION VARIABLE {LOWER_BOUND UPPER_BOUND} [APPROXIMATE] Example(s): >>> caspy integ 1/sqrt(1-x**2) x -1 1 >>> caspy integ x**x x -1 1 -A ``` #### limit ``` Calculate the limit of an expression. Usage: caspy limit EXPRESSION VARIABLE AS_VARIABLE_IS_APPROACHING [SIDE] Example(s): >>> caspy limit (1+1/(a*n))**(b*n) n oo >>> caspy limit n!**(1/n) n 0 - ``` #### pf ``` Retreives the prime factors of an positive integer. Note: exact_ans stores factors as dict: '{2: 2, 3: 1, 31: 1}' while approx_ans stores factors as string: '(2**2)*(3**1)*(31**1)' Usage: pf NUMBER Example(s): >>> caspy pf 372 ``` #### simp ``` Simplifies an expression. Usage: simp EXPRESSION Example(s): >>> caspy simp sin(x)**2+cos(x)**2 ``` #### start ``` Start the GUI. No options/flags etc ``` #### web ``` Choose a number from a list of usable maths websites and open it in default web browser. type '-l' for a list of websites and enter a number. The website will be opened in the default browser. Usage: web {NUMBER | LIST} Example(s): >>> caspy web 4 >>> caspy web -l ```