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| end_scripts = {"quit", "end", "q"} | |
| help_scripts = {"help", "h"} | |
| help_doc = """ | |
| A reverse polish or postfix calculator evaluates two numbers by the next opertion. | |
| For example, the sum of 4 and 5 can be found by entering: 5 4 + | |
| Available operations include | |
| + addition |
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