Python is developed in C language

Python is developed in the C language.

#c language, no Strings: strings using character groups to represent hello-five character array [' H ', ' e ',... ' o '] so if a string is modified in Python, it opens up a chunk of memory in memory. For example, hello to HELLOAA is not to [' H ', ' e ', ' l ' ..., O] after the array is added [A,a] But the memory opens up a space to rewrite the preceding Hello and add [A,a] that is: [' h ', ' e ', ' l ', ' a ', ' a '] So why not add, but re-open space? Because the memory usage address is contiguous. Suppose your string uses 1-n's memory address block, from N+1 is another address block that is used by other strings. You say how you add [A,a], memory address n has been used after. So the memory processing method is newly opened up a block of addresses that will precede the rewrite in addition to the required content. Conclusion: The modification of the string is actually a new piece of memory opened up. So programming in ' hello ' + ' world ' + ' ... ' Each of the + numbers will open up a new memory and consume memory. Low efficiency.

Python is developed in C language