TracePrint [expr]
prints all expressions used in the evaluation of expr.
TracePrint [expr,form]
includes only those expressions which match form.
TracePrint [expr,s]
includes all evaluations which use transformation rules associated with the symbol s.
TracePrint
TracePrint [expr]
prints all expressions used in the evaluation of expr.
TracePrint [expr,form]
includes only those expressions which match form.
TracePrint [expr,s]
includes all evaluations which use transformation rules associated with the symbol s.
Details and Options
- TracePrint indents its output in correspondence with the nesting levels for lists generated by Trace .
- The indentation is done using the print form defined for the object Indent[d].
- TracePrint prints the forms of expressions before any of their elements are evaluated.
- TracePrint does not support the TraceBackward option of Trace .
- TracePrint yields only the forward part of the output specified by the option setting TraceAbove->All .
- TracePrint [expr] returns the result of evaluating expr.
Examples
Basic Examples (2)
Print all expressions used in evaluation of an expression:
A recursive definition for finding Fibonacci numbers:
Show all additions of positive integers:
See Also
Trace On Print Echo Assert TraceScan TraceDialog
Function Repository: TracePrintEvaluations
Tech Notes
Related Guides
Related Workflows
- Get a Stack Trace ▪
- Print Intermediate Values of a Variable ▪
- Set Up Error Checking and Messages in a Function
History
Introduced in 1991 (2.0)
Text
Wolfram Research (1991), TracePrint, Wolfram Language function, https://reference.wolfram.com/language/ref/TracePrint.html.
CMS
Wolfram Language. 1991. "TracePrint." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/TracePrint.html.
APA
Wolfram Language. (1991). TracePrint. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/TracePrint.html
BibTeX
@misc{reference.wolfram_2025_traceprint, author="Wolfram Research", title="{TracePrint}", year="1991", howpublished="\url{https://reference.wolfram.com/language/ref/TracePrint.html}", note=[Accessed: 05-December-2025]}
BibLaTeX
@online{reference.wolfram_2025_traceprint, organization={Wolfram Research}, title={TracePrint}, year={1991}, url={https://reference.wolfram.com/language/ref/TracePrint.html}, note=[Accessed: 05-December-2025]}