es bartlett learning(cjonesllc bartlett learning llcan ascend learning company not for sale or distribution not for sale or distribution or sale or distribution viii contents (ccryptanalysis jones bartlett learningllc (cjones bartlett learn not for sale or dist not for sale or distribution objectives introduction cracking the rail fence checking our work with dictionary brute-force solution rail fence decryption algorithm (cjones bartlett learningllc (cjones bartlett learningllc cracking the substitution cipher not for sale or distribution not for sale or distribution letter frequency ciphertext frequency analysis letter pair analysis word frequency analysis pattern matching with partial words regular expression summary es bartlett learning llcsummary (cjones bartlett learningllc key terms not for sale or distribution or sale or distribution python functionsmethodsand keywords programming exercises fractalsthe geometry of nature objectives ( ) jonesintroduction bartlett learningllc (cjones bartlett learn not for sale or distribution recursive programs not for sale or dist recursive squares classic recursive functions drawing recursive tree the sierpinski triangle call tree for sierpinski triangle (cjones bartlett learningllc snowflakeslindenmayerand grammars (cjones bartlett learning llc -systems not for sale or distribution not for sale or distribution automatically expanding production rules more advanced -systems summary key terms programming exercises es bartlett learningllc planet objects or sale or distribution (cjones bartlett learningllc not for sale or distribution es bartlett learningllc (cjones bartlett learningllc objectives introduction programming object-oriented programming python classes ( ) jonesdesigning bartlett learningllcclass (clearn and implementing planet jones bartlett constructor method not for sale or dist not for sale or distribution accessor methods mutator methods special methods methods and self details of method storage and lookup designing andllc implementing sun class (cjones bartlett learning llc (cjones bartlett learning designing and implementing solar system not for sale or distribution not for sale or distribution animating the solar system using turtles planetary orbits implementation