{"id":1142019,"date":"2025-01-08T22:36:04","date_gmt":"2025-01-08T14:36:04","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1142019.html"},"modified":"2025-01-08T22:36:07","modified_gmt":"2025-01-08T14:36:07","slug":"python%e5%a6%82%e4%bd%95%e4%b8%a4%e4%b8%aa%e5%ad%97%e7%ac%a6%e4%b8%80%e8%a1%8c%e8%be%93%e5%87%ba","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1142019.html","title":{"rendered":"python\u5982\u4f55\u4e24\u4e2a\u5b57\u7b26\u4e00\u884c\u8f93\u51fa"},"content":{"rendered":"

\"python\u5982\u4f55\u4e24\u4e2a\u5b57\u7b26\u4e00\u884c\u8f93\u51fa\"<\/p>\n

\u8981\u5728Python\u4e2d\u5c06\u5b57\u7b26\u4e32\u6bcf\u4e24\u4e2a\u5b57\u7b26\u8f93\u51fa\u4e00\u884c\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u5207\u7247\u548c\u5faa\u73af\u6765\u5b9e\u73b0\u3002<\/strong>\u3001\u5b57\u7b26\u4e32\u5207\u7247\u662f\u6307\u901a\u8fc7\u6307\u5b9a\u8d77\u59cb\u548c\u7ec8\u6b62\u7d22\u5f15\u6765\u83b7\u53d6\u5b57\u7b26\u4e32\u4e2d\u7684\u5b50\u5b57\u7b26\u4e32\u3002<\/strong>\u3001\u901a\u8fc7\u5faa\u73af\u53ef\u4ee5\u904d\u5386\u5b57\u7b26\u4e32\u5e76\u6309\u9700\u8981\u7684\u683c\u5f0f\u8f93\u51fa\u3002<\/strong> \u4e0b\u9762\u662f\u4e00\u4e2a\u5177\u4f53\u7684\u5b9e\u73b0\u65b9\u6cd5\uff1a<\/p>\n<\/p>\n

def print_two_chars_per_line(input_string):<\/p>\n
    for i in range(0, len(input_string), 2):<\/p>\n
        print(input_string[i:i+2])<\/p>\n
input_string = "abcdefghijklmn"<\/p>\n
print_two_chars_per_line(input_string)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0cprint_two_chars_per_line<\/code>\u51fd\u6570\u63a5\u6536\u4e00\u4e2a\u5b57\u7b26\u4e32\u53c2\u6570input_string<\/code>\uff0c\u901a\u8fc7for<\/code>\u5faa\u73af\uff0c\u6bcf\u6b21\u6b65\u8fdb2\u4e2a\u5b57\u7b26\uff0c\u5229\u7528\u5b57\u7b26\u4e32\u5207\u7247input_string[i:i+2]<\/code>\u83b7\u53d6\u4e24\u4e2a\u5b57\u7b26\u5e76\u8f93\u51fa\u3002<\/p>\n<\/p>\n
\n
\u4e00\u3001\u5b57\u7b26\u4e32\u5207\u7247\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<\/p>\n
\u5b57\u7b26\u4e32\u5207\u7247\u662fPython\u4e2d\u7684\u4e00\u4e2a\u5f3a\u5927\u529f\u80fd\uff0c\u5b83\u5141\u8bb8\u4f60\u901a\u8fc7\u7d22\u5f15\u6765\u83b7\u53d6\u5b57\u7b26\u4e32\u4e2d\u7684\u4e00\u90e8\u5206\u3002\u5207\u7247\u8bed\u6cd5\u4e3astring[start:end:step]<\/code>\uff0c\u5176\u4e2dstart<\/code>\u662f\u5207\u7247\u7684\u5f00\u59cb\u7d22\u5f15\uff0cend<\/code>\u662f\u5207\u7247\u7684\u7ed3\u675f\u7d22\u5f15\uff0cstep<\/code>\u662f\u5207\u7247\u7684\u6b65\u957f\u3002<\/p>\n<\/p>\n
1. \u5207\u7247\u7684\u57fa\u7840\u64cd\u4f5c<\/h3>\n<\/p>\n
\u5207\u7247\u64cd\u4f5c\u4e2d\uff0cstart<\/code>\u548cend<\/code>\u662f\u53ef\u9009\u7684\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cstart<\/code>\u4e3a0\uff0cend<\/code>\u4e3a\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\uff0cstep<\/code>\u4e3a1\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
string = "hello world"<\/p>\n
print(string[0:5])  # \u8f93\u51fa "hello"<\/p>\n
print(string[6:])   # \u8f93\u51fa "world"<\/p>\n
print(string[:5])   # \u8f93\u51fa "hello"<\/p>\n
print(string[::2])  # \u8f93\u51fa "hlowrd"<\/p>\n
<\/code><\/pre>\n<\/p>\n
2. \u5728\u5207\u7247\u4e2d\u4f7f\u7528\u6b65\u957f<\/h3>\n<\/p>\n
\u6b65\u957f\u53c2\u6570step<\/code>\u53ef\u4ee5\u7528\u6765\u8df3\u8fc7\u7279\u5b9a\u7684\u5b57\u7b26\u3002\u9ed8\u8ba4\u6b65\u957f\u4e3a1\uff0c\u5982\u679c\u6b65\u957f\u4e3a2\uff0c\u90a3\u4e48\u6bcf\u9694\u4e00\u4e2a\u5b57\u7b26\u83b7\u53d6\u4e00\u4e2a\u5b57\u7b26\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
string = "abcdef"<\/p>\n
print(string[::2])  # \u8f93\u51fa "ace"<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e8c\u3001\u5faa\u73af\u904d\u5386\u5b57\u7b26\u4e32<\/h2>\n<\/p>\n
\u4e3a\u4e86\u6bcf\u4e24\u4e2a\u5b57\u7b26\u8f93\u51fa\u4e00\u884c\uff0c\u6211\u4eec\u9700\u8981\u904d\u5386\u6574\u4e2a\u5b57\u7b26\u4e32\uff0c\u5e76\u5728\u6bcf\u6b21\u5faa\u73af\u4e2d\u83b7\u53d6\u4e24\u4e2a\u5b57\u7b26\u3002\u53ef\u4ee5\u4f7f\u7528for<\/code>\u5faa\u73af\u7ed3\u5408\u5207\u7247\u5b8c\u6210\u8fd9\u4e2a\u4efb\u52a1\u3002<\/p>\n<\/p>\n
1. \u4f7f\u7528for<\/code>\u5faa\u73af\u4e0e\u5207\u7247<\/h3>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86for<\/code>\u5faa\u73af\u548c\u5207\u7247\u6765\u5b9e\u73b0\u6bcf\u4e24\u4e2a\u5b57\u7b26\u8f93\u51fa\u4e00\u884c\uff1a<\/p>\n<\/p>\n
def print_two_chars_per_line(input_string):<\/p>\n
    for i in range(0, len(input_string), 2):<\/p>\n
        print(input_string[i:i+2])<\/p>\n
<\/code><\/pre>\n<\/p>\n
range(0, len(input_string), 2)<\/code>\u8868\u793a\u4ece0\u5f00\u59cb\uff0c\u6bcf\u6b21\u6b65\u8fdb2\uff0c\u76f4\u5230\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u3002input_string[i:i+2]<\/code>\u5219\u8868\u793a\u4ece\u7d22\u5f15i<\/code>\u5f00\u59cb\uff0c\u83b7\u53d6\u4e24\u4e2a\u5b57\u7b26\u3002<\/p>\n<\/p>\n
2. \u5904\u7406\u5b57\u7b26\u4e32\u957f\u5ea6\u4e3a\u5947\u6570\u7684\u60c5\u51b5<\/h3>\n<\/p>\n
\u5982\u679c\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u662f\u5947\u6570\uff0c\u6700\u540e\u4e00\u4e2a\u5b57\u7b26\u5c06\u5355\u72ec\u8f93\u51fa\u3002\u4e0a\u8ff0\u4ee3\u7801\u5df2\u7ecf\u5904\u7406\u4e86\u8fd9\u79cd\u60c5\u51b5\uff0c\u56e0\u4e3a\u5207\u7247\u64cd\u4f5c\u4e0d\u4f1a\u629b\u51fa\u7d22\u5f15\u8d85\u51fa\u8303\u56f4\u7684\u9519\u8bef\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
input_string = "abcdefg"<\/p>\n
print_two_chars_per_line(input_string)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a<\/p>\n<\/p>\n
ab<\/p>\n
cd<\/p>\n
ef<\/p>\n
g<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001\u5904\u7406\u4e0d\u540c\u7c7b\u578b\u7684\u5b57\u7b26\u4e32<\/h2>\n<\/p>\n
1. \u7a7a\u5b57\u7b26\u4e32<\/h3>\n<\/p>\n
\u5f53\u8f93\u5165\u4e3a\u7a7a\u5b57\u7b26\u4e32\u65f6\uff0c\u51fd\u6570\u4e0d\u4f1a\u8f93\u51fa\u4efb\u4f55\u5185\u5bb9\uff0c\u8fd9\u7b26\u5408\u9884\u671f\uff1a<\/p>\n<\/p>\n
input_string = ""<\/p>\n
print_two_chars_per_line(input_string)<\/p>\n
<\/code><\/pre>\n<\/p>\n
2. \u542b\u6709\u7a7a\u683c\u548c\u7279\u6b8a\u5b57\u7b26\u7684\u5b57\u7b26\u4e32<\/h3>\n<\/p>\n
\u51fd\u6570\u540c\u6837\u9002\u7528\u4e8e\u5305\u542b\u7a7a\u683c\u548c\u7279\u6b8a\u5b57\u7b26\u7684\u5b57\u7b26\u4e32\uff1a<\/p>\n<\/p>\n
input_string = "a b$c@d!e f"<\/p>\n
print_two_chars_per_line(input_string)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a<\/p>\n<\/p>\n
a <\/p>\n
b$<\/p>\n
c@<\/p>\n
d!<\/p>\n
e <\/p>\n
f<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u56db\u3001\u6269\u5c55\u529f\u80fd<\/h2>\n<\/p>\n
\u53ef\u4ee5\u5bf9\u51fd\u6570\u8fdb\u884c\u6269\u5c55\uff0c\u4ee5\u5904\u7406\u66f4\u591a\u7684\u9700\u6c42\uff0c\u6bd4\u5982\u5b9a\u5236\u8f93\u51fa\u683c\u5f0f\u3001\u5904\u7406\u591a\u79cd\u8f93\u5165\u7c7b\u578b\u7b49\u3002<\/p>\n<\/p>\n
1. \u81ea\u5b9a\u4e49\u5206\u9694\u7b26<\/h3>\n<\/p>\n
\u53ef\u4ee5\u6dfb\u52a0\u4e00\u4e2a\u53c2\u6570\u6765\u6307\u5b9a\u8f93\u51fa\u65f6\u7684\u5206\u9694\u7b26\uff1a<\/p>\n<\/p>\n
def print_two_chars_per_line(input_string, separator="\\n"):<\/p>\n
    for i in range(0, len(input_string), 2):<\/p>\n
        print(input_string[i:i+2], end=separator)<\/p>\n
input_string = "abcdefghijklmn"<\/p>\n
print_two_chars_per_line(input_string, separator=" ")<\/p>\n
<\/code><\/pre>\n<\/p>\n
2. \u5904\u7406\u591a\u884c\u8f93\u5165<\/h3>\n<\/p>\n
\u5982\u679c\u8f93\u5165\u662f\u591a\u884c\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u5148\u5c06\u5176\u5408\u5e76\u4e3a\u5355\u884c\uff0c\u7136\u540e\u518d\u8fdb\u884c\u5904\u7406\uff1a<\/p>\n<\/p>\n
def print_two_chars_per_line(input_string):<\/p>\n
    single_line_string = input_string.replace("\\n", "")<\/p>\n
    for i in range(0, len(single_line_string), 2):<\/p>\n
        print(single_line_string[i:i+2])<\/p>\n
input_string = """abc<\/p>\n
def<\/p>\n
ghi"""<\/p>\n
print_two_chars_per_line(input_string)<\/p>\n
<\/code><\/pre>\n<\/p>\n
3. \u5904\u7406Unicode\u5b57\u7b26<\/h3>\n<\/p>\n
Python\u5bf9Unicode\u5b57\u7b26\u7684\u652f\u6301\u826f\u597d\uff0c\u4e0a\u8ff0\u51fd\u6570\u4e5f\u80fd\u6b63\u786e\u5904\u7406\u5305\u542bUnicode\u5b57\u7b26\u7684\u5b57\u7b26\u4e32\uff1a<\/p>\n<\/p>\n
input_string = "\u4f60\u597d\u4e16\u754c"<\/p>\n
print_two_chars_per_line(input_string)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a<\/p>\n<\/p>\n
\u4f60\u597d<\/p>\n
\u4e16\u754c<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e94\u3001\u603b\u7ed3<\/h2>\n<\/p>\n
\u5728Python\u4e2d\uff0c\u901a\u8fc7\u5b57\u7b26\u4e32\u5207\u7247\u548c\u5faa\u73af\uff0c\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u6bcf\u4e24\u4e2a\u5b57\u7b26\u8f93\u51fa\u4e00\u884c\u7684\u529f\u80fd\u3002\u5b57\u7b26\u4e32\u5207\u7247\u662f\u4e00\u79cd\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u80fd\u591f\u7075\u6d3b\u5730\u83b7\u53d6\u5b57\u7b26\u4e32\u7684\u90e8\u5206\u5185\u5bb9<\/strong>\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u6211\u4eec\u4e0d\u4ec5\u53ef\u4ee5\u5904\u7406\u7b80\u5355\u7684\u5b57\u7b26\u4e32\uff0c\u8fd8\u80fd\u5904\u7406\u5305\u542b\u7a7a\u683c\u3001\u7279\u6b8a\u5b57\u7b26\u3001\u591a\u884c\u6587\u672c\u548cUnicode\u5b57\u7b26\u7684\u590d\u6742\u5b57\u7b26\u4e32\u3002\u901a\u8fc7\u4e0d\u65ad\u6269\u5c55\u548c\u6539\u8fdb\u4ee3\u7801\uff0c\u53ef\u4ee5\u6ee1\u8db3\u4e0d\u540c\u573a\u666f\u7684\u9700\u6c42<\/strong>\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u5b9e\u73b0\u6bcf\u4e24\u4e2a\u5b57\u7b26\u4e00\u884c\u7684\u8f93\u51fa\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u548c\u5b57\u7b26\u4e32\u5207\u7247\u6765\u5b9e\u73b0\u6bcf\u4e24\u4e2a\u5b57\u7b26\u4e00\u884c\u7684\u8f93\u51fa\u3002\u9996\u5148\uff0c\u5c06\u5b57\u7b26\u4e32\u5206\u5272\u6210\u6bcf\u4e24\u4e2a\u5b57\u7b26\u4e00\u7ec4\uff0c\u7136\u540e\u4f7f\u7528print()<\/code>\u51fd\u6570\u9010\u884c\u8f93\u51fa\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n
text = "abcdefghij"\nfor i in range(0, len(text), 2):\n    print(text[i:i+2])\n<\/code><\/pre>\n
\u662f\u5426\u53ef\u4ee5\u5904\u7406\u4e0d\u540c\u957f\u5ea6\u7684\u5b57\u7b26\u4e32\uff1f<\/strong>
\u5f53\u7136\u53ef\u4ee5\u3002\u5982\u679c\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u662f\u5947\u6570\uff0c\u6700\u540e\u4e00\u884c\u53ef\u80fd\u4f1a\u53ea\u5305\u542b\u4e00\u4e2a\u5b57\u7b26\u3002\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u793a\u4f8b\u4e2d\uff0c\u5207\u7247\u64cd\u4f5c\u4f1a\u81ea\u52a8\u5904\u7406\u8fd9\u4e00\u60c5\u51b5\uff0c\u6700\u540e\u7684\u8f93\u51fa\u5c06\u662f\u6700\u540e\u4e00\u4e2a\u5b57\u7b26\u7684\u5355\u72ec\u4e00\u884c\u3002<\/p>\n
\u5982\u4f55\u5c06\u8fd9\u79cd\u8f93\u51fa\u65b9\u5f0f\u5e94\u7528\u4e8e\u5217\u8868\u4e2d\u7684\u591a\u4e2a\u5b57\u7b26\u4e32\uff1f<\/strong>
\u5982\u679c\u4f60\u6709\u4e00\u4e2a\u5b57\u7b26\u4e32\u5217\u8868\uff0c\u5e76\u5e0c\u671b\u5bf9\u6bcf\u4e2a\u5b57\u7b26\u4e32\u90fd\u8fdb\u884c\u76f8\u540c\u7684\u5904\u7406\uff0c\u53ef\u4ee5\u4f7f\u7528\u5d4c\u5957\u5faa\u73af\u6765\u5b9e\u73b0\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n
strings = ["hello", "world", "python"]\nfor text in strings:\n    for i in range(0, len(text), 2):\n        print(text[i:i+2])\n<\/code><\/pre>\n
\u8fd9\u79cd\u65b9\u6cd5\u5c06\u4e3a\u5217\u8868\u4e2d\u7684\u6bcf\u4e2a\u5b57\u7b26\u4e32\u8f93\u51fa\u6bcf\u4e24\u4e2a\u5b57\u7b26\u4e00\u884c\u7684\u683c\u5f0f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u8981\u5728Python\u4e2d\u5c06\u5b57\u7b26\u4e32\u6bcf\u4e24\u4e2a\u5b57\u7b26\u8f93\u51fa\u4e00\u884c\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u5207\u7247\u548c\u5faa\u73af\u6765\u5b9e\u73b0\u3002\u3001\u5b57\u7b26\u4e32\u5207\u7247\u662f\u6307\u901a\u8fc7\u6307\u5b9a\u8d77\u59cb\u548c\u7ec8 […]","protected":false},"author":3,"featured_media":1142028,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1142019"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1142019"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1142019\/revisions"}],"predecessor-version":[{"id":1142030,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1142019\/revisions\/1142030"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1142028"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1142019"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1142019"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1142019"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}