Python，拆分字符串

Question

我有一個大的字符串文本文件，我想每117個字符拆分字符串並將下一個117個字符放在換行符上，依此類推，直到文件結束。

我試過這個：`s =“”“我出於可見性原因刪除了字符串”“”space =“”“

“”“file = open（'testoutput.txt'，'w'）而s：print s [：10] output = output + s +”“”“

"""
s = s[10:]

file.write（output）file.close（）print“Done”`

但有一個問題，文件中的最終輸出看起來像這個級聯：`這個[SHIFT] r [BACKSPACE]分子及其后代av [BACKSPACE] [BACKSPACE]因突變而變化

T]r[BACKSPACE]molecule and its descendants would av[BACKSPACE][BACKSPACE]vary because of mutations



ACE]molecule and its descendants would av[BACKSPACE][BACKSPACE]vary because of mutations



le and its descendants would av[BACKSPACE][BACKSPACE]vary because of mutations



 descendants would av[BACKSPACE][BACKSPACE]vary because of mutations



ts would av[BACKSPACE][BACKSPACE]vary because of mutations



v[BACKSPACE][BACKSPACE]vary because of mutations



E][BACKSPACE]vary because of mutations



CE]vary because of mutations



cause of mutations



utations

`

Answer 1

while s:
    print s[:117]
    s = s[117:]

Answer 2

您可以使用常規切片語法拆分緩沖區，也可以選擇在讀取文件時直接拆分文件。 這是第二種方法的一個例子：

with open(r"/path/to/some/file") as input_file:
    line = input_file.read(117)
    while line:
        print len(line)
        line = input_file.read(117)