![\"Python\u5982\u4f55\u5b9e\u73b0\u8bfb\u53d6txt\u6587\u4ef6\"](\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25134444\/33e5620b-61f3-495e-a265-8bafdf9ada0b.webp\")
<\/p>\n<\/p>\n
Python\u5b9e\u73b0\u8bfb\u53d6txt\u6587\u4ef6\u7684\u65b9\u6cd5\u6709\u591a\u79cd<\/strong>\uff0c\u5305\u62ec\u4f7f\u7528\u5185\u7f6e\u7684 \u4e0b\u9762\u6211\u4eec\u8be6\u7ec6\u5c55\u5f00\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528 \u5f53\u6211\u4eec\u4f7f\u7528 <\/code><\/pre>\n<\/p>\n \u5176\u4e2d\uff0c \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 file = open('example.txt', 'r')<\/p>\n content = file.read()<\/p>\n print(content)<\/p>\n file.close()<\/p>\n file = open('example.txt', 'r')<\/p>\n line = file.readline()<\/p>\n print(line)<\/p>\n file.close()<\/p>\n file = open('example.txt', 'r')<\/p>\n lines = file.readlines()<\/p>\n for line in lines:<\/p>\n print(line)<\/p>\n file.close()<\/p>\n <\/code><\/pre>\n<\/p>\n # \u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9<\/p>\n <\/code><\/pre>\n<\/p>\n \u5176\u4e2d\uff0c \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 with open('example.txt', 'r') as file:<\/p>\n content = file.read()<\/p>\n print(content)<\/p>\n with open('example.txt', 'r') as file:<\/p>\n line = file.readline()<\/p>\n print(line)<\/p>\n with open('example.txt', 'r') as file:<\/p>\n lines = file.readlines()<\/p>\n for line in lines:<\/p>\n print(line)<\/p>\n <\/code><\/pre>\n<\/p>\n content = file.read()<\/p>\n print(content)<\/p>\n <\/code><\/pre>\n<\/p>\n content = file.read(10) # \u8bfb\u53d6\u524d10\u4e2a\u5b57\u7b26<\/p>\n print(content)<\/p>\n <\/code><\/pre>\n<\/p>\n line = file.readline()<\/p>\n print(line)<\/p>\n <\/code><\/pre>\n<\/p>\n \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u7ed3\u6784\u8bfb\u53d6\u6587\u4ef6\u7684\u591a\u884c\u5185\u5bb9\u3002<\/p>\n<\/p>\n line = file.readline()<\/p>\n while line:<\/p>\n print(line)<\/p>\n line = file.readline()<\/p>\n <\/code><\/pre>\n<\/p>\n lines = file.readlines()<\/p>\n for line in lines:<\/p>\n print(line)<\/p>\n <\/code><\/pre>\n<\/p>\n \u5bf9\u4e8e\u5927\u6587\u4ef6\uff0c\u4f7f\u7528 for line in file:<\/p>\n print(line)<\/p>\n <\/code><\/pre>\n<\/p>\n df = pd.read_csv('example.txt', delimiter='\\t') # \u4f7f\u7528\u5236\u8868\u7b26\u4f5c\u4e3a\u5206\u9694\u7b26<\/p>\n print(df)<\/p>\n <\/code><\/pre>\n<\/p>\n \u6211\u4eec\u53ef\u4ee5\u901a\u8fc7 print(df)<\/p>\n <\/code><\/pre>\n<\/p>\n \u6211\u4eec\u53ef\u4ee5\u901a\u8fc7 df.fillna(0, inplace=True)<\/p>\n print(df)<\/p>\n <\/code><\/pre>\n<\/p>\n data = np.loadtxt('example.txt', delimiter='\\t') # \u4f7f\u7528\u5236\u8868\u7b26\u4f5c\u4e3a\u5206\u9694\u7b26<\/p>\n print(data)<\/p>\n <\/code><\/pre>\n<\/p>\n \u6211\u4eec\u53ef\u4ee5\u901a\u8fc7 print(data)<\/p>\n <\/code><\/pre>\n<\/p>\n \u6211\u4eec\u53ef\u4ee5\u901a\u8fc7 print(data)<\/p>\n <\/code><\/pre>\n<\/p>\n \u5bf9\u4e8e\u5927\u6587\u4ef6\uff0c\u6211\u4eec\u53ef\u4ee5\u5206\u6279\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0c\u4ee5\u907f\u514d\u4e00\u6b21\u6027\u52a0\u8f7d\u8fc7\u591a\u6570\u636e\u5230\u5185\u5b58\u4e2d\u3002<\/p>\n<\/p>\n while True:<\/p>\n data = file_object.read(chunk_size)<\/p>\n if not data:<\/p>\n break<\/p>\n yield data<\/p>\n with open('example.txt', 'r') as file:<\/p>\n for chunk in read_in_chunks(file):<\/p>\n print(chunk)<\/p>\n <\/code><\/pre>\n<\/p>\n \u5185\u5b58\u6620\u5c04\uff08Memory Mapping\uff09\u662f\u4e00\u79cd\u9ad8\u6548\u8bfb\u53d6\u5927\u6587\u4ef6\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5c06\u6587\u4ef6\u5185\u5bb9\u6620\u5c04\u5230\u5185\u5b58\u4e2d\uff0c\u6309\u9700\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u3002<\/p>\n<\/p>\n with open('example.txt', 'r') as file:<\/p>\n with mmap.mmap(file.fileno(), length=0, access=mmap.ACCESS_READ) as m:<\/p>\n for line in iter(m.readline, b''):<\/p>\n print(line.decode('utf-8'))<\/p>\n <\/code><\/pre>\n<\/p>\n \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 with gzip.open('example.txt.gz', 'rt') as file:<\/p>\n content = file.read()<\/p>\n print(content)<\/p>\n <\/code><\/pre>\n<\/p>\n \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 with zipfile.ZipFile('example.zip', 'r') as zip_file:<\/p>\n with zip_file.open('example.txt') as file:<\/p>\n content = file.read()<\/p>\n print(content)<\/p>\n <\/code><\/pre>\n<\/p>\n \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 with open('example.json', 'r') as file:<\/p>\n data = json.load(file)<\/p>\n print(data)<\/p>\n <\/code><\/pre>\n<\/p>\n \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 tree = ET.parse('example.xml')<\/p>\n root = tree.getroot()<\/p>\n for child in root:<\/p>\n print(child.tag, child.attrib)<\/p>\n <\/code><\/pre>\n<\/p>\n \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 with open('example.csv', 'r') as file:<\/p>\n reader = csv.reader(file)<\/p>\n for row in reader:<\/p>\n print(row)<\/p>\n <\/code><\/pre>\n<\/p>\n \u5728Python\u4e2d\uff0c\u8bfb\u53d6txt\u6587\u4ef6\u7684\u65b9\u6cd5\u6709\u5f88\u591a\uff0c\u5e38\u89c1\u7684\u5305\u62ec\u4f7f\u7528 \u5982\u4f55\u4f7f\u7528Python\u8bfb\u53d6txt\u6587\u4ef6\u4e2d\u7684\u5185\u5bb9\uff1f<\/strong> \u8fd9\u79cd\u65b9\u5f0f\u4f1a\u6253\u5f00\u6587\u4ef6\u5e76\u8bfb\u53d6\u6240\u6709\u5185\u5bb9\uff0c \u5728\u8bfb\u53d6txt\u6587\u4ef6\u65f6\uff0c\u5982\u4f55\u5904\u7406\u6587\u4ef6\u7f16\u7801\u95ee\u9898\uff1f<\/strong> \u786e\u4fdd\u6839\u636e\u6587\u4ef6\u5b9e\u9645\u4f7f\u7528\u7684\u7f16\u7801\u6765\u9009\u62e9\u9002\u5f53\u7684\u7f16\u7801\u683c\u5f0f\uff0c\u4ee5\u907f\u514d\u4e71\u7801\u3002<\/p>\n \u8bfb\u53d6txt\u6587\u4ef6\u65f6\uff0c\u5982\u4f55\u9010\u884c\u8bfb\u53d6\u5185\u5bb9\uff1f<\/strong> \u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u6709\u6548\u5730\u5904\u7406\u6bcf\u4e00\u884c\u6570\u636e\uff0c\u9002\u5408\u9700\u8981\u9010\u884c\u5206\u6790\u6216\u5904\u7406\u6587\u672c\u7684\u573a\u666f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u5b9e\u73b0\u8bfb\u53d6txt\u6587\u4ef6\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u5305\u62ec\u4f7f\u7528\u5185\u7f6e\u7684open()\u51fd\u6570\u3001with open()\u8bed\u53e5\u3001rea […]","protected":false},"author":3,"featured_media":1185284,"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\/1185281"}],"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=1185281"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1185281\/revisions"}],"predecessor-version":[{"id":1185285,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1185281\/revisions\/1185285"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1185284"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1185281"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1185281"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1185281"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}open()<\/code>\u51fd\u6570\u3001with open()<\/code>\u8bed\u53e5\u3001read()<\/code>\u65b9\u6cd5\u3001readline()<\/code>\u65b9\u6cd5\u548creadlines()<\/code>\u65b9\u6cd5\u7b49\u3002\u5176\u4e2d\uff0c\u6700\u5e38\u7528\u7684\u65b9\u5f0f\u662f\u4f7f\u7528with open()<\/code>\u8bed\u53e5\uff0c\u56e0\u4e3a\u5b83\u80fd\u81ea\u52a8\u7ba1\u7406\u6587\u4ef6\u8d44\u6e90\u7684\u91ca\u653e\uff0c\u907f\u514d\u624b\u52a8\u5173\u95ed\u6587\u4ef6\u7684\u9ebb\u70e6\u3002<\/strong><\/p>\n<\/p>\nwith open()<\/code>\u8bed\u53e5\u6765\u8bfb\u53d6txt\u6587\u4ef6\u3002<\/p>\n<\/p>\nwith open()<\/code>\u8bed\u53e5\u65f6\uff0cPython\u4f1a\u81ea\u52a8\u5904\u7406\u6587\u4ef6\u7684\u6253\u5f00\u548c\u5173\u95ed\u64cd\u4f5c\uff0c\u8fd9\u6837\u53ef\u4ee5\u6709\u6548\u907f\u514d\u56e0\u6587\u4ef6\u672a\u5173\u95ed\u800c\u9020\u6210\u7684\u8d44\u6e90\u6cc4\u6f0f\u95ee\u9898\u3002\u6b64\u5916\uff0cwith open()<\/code>\u8bed\u53e5\u8fd8\u652f\u6301\u591a\u79cd\u8bfb\u53d6\u6a21\u5f0f\uff0c\u4f8b\u5982\u8bfb\u53d6\u6587\u4ef6\u7684\u5168\u90e8\u5185\u5bb9\u3001\u6309\u884c\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u7b49\u3002<\/p>\n<\/p>\n\u4e00\u3001\u4f7f\u7528open()\u51fd\u6570\u8bfb\u53d6txt\u6587\u4ef6<\/h2>\n<\/p>\n
1.1 \u57fa\u672c\u7528\u6cd5<\/h3>\n<\/p>\n
open()<\/code>\u51fd\u6570\u662fPython\u5185\u7f6e\u7684\u51fd\u6570\uff0c\u7528\u4e8e\u6253\u5f00\u6587\u4ef6\u5e76\u8fd4\u56de\u6587\u4ef6\u5bf9\u8c61\u3002\u5176\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<\/p>\nfile = open('filename', mode)<\/p>\nfilename<\/code>\u662f\u8981\u6253\u5f00\u7684\u6587\u4ef6\u7684\u540d\u79f0\uff0cmode<\/code>\u662f\u6253\u5f00\u6587\u4ef6\u7684\u6a21\u5f0f\uff0c\u5e38\u89c1\u7684\u6a21\u5f0f\u5982\u4e0b\uff1a<\/p>\n<\/p>\n\n
'r'<\/code>\uff1a\u53ea\u8bfb\u6a21\u5f0f\uff08\u9ed8\u8ba4\u6a21\u5f0f\uff09\u3002<\/li>\n'w'<\/code>\uff1a\u5199\u5165\u6a21\u5f0f\uff0c\u4f1a\u8986\u76d6\u6587\u4ef6\u5185\u5bb9\u3002<\/li>\n'a'<\/code>\uff1a\u8ffd\u52a0\u6a21\u5f0f\uff0c\u5728\u6587\u4ef6\u672b\u5c3e\u8ffd\u52a0\u5185\u5bb9\u3002<\/li>\n'b'<\/code>\uff1a\u4e8c\u8fdb\u5236\u6a21\u5f0f\uff0c\u7528\u4e8e\u975e\u6587\u672c\u6587\u4ef6\u3002<\/li>\n't'<\/code>\uff1a\u6587\u672c\u6a21\u5f0f\uff08\u9ed8\u8ba4\u6a21\u5f0f\uff09\u3002<\/li>\n<\/ul>\n1.2 \u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9<\/h3>\n<\/p>\n
read()<\/code>\u65b9\u6cd5\u8bfb\u53d6\u6587\u4ef6\u7684\u5168\u90e8\u5185\u5bb9\uff0creadline()<\/code>\u65b9\u6cd5\u8bfb\u53d6\u6587\u4ef6\u7684\u4e00\u884c\u5185\u5bb9\uff0creadlines()<\/code>\u65b9\u6cd5\u8bfb\u53d6\u6587\u4ef6\u7684\u6240\u6709\u884c\u5e76\u8fd4\u56de\u4e00\u4e2a\u5217\u8868\u3002<\/p>\n<\/p>\n# \u8bfb\u53d6\u6587\u4ef6\u7684\u5168\u90e8\u5185\u5bb9<\/p>\n\u8bfb\u53d6\u6587\u4ef6\u7684\u4e00\u884c\u5185\u5bb9<\/strong><\/h2>\n
\u8bfb\u53d6\u6587\u4ef6\u7684\u6240\u6709\u884c\u5e76\u8fd4\u56de\u4e00\u4e2a\u5217\u8868<\/strong><\/h2>\n
\u4e8c\u3001\u4f7f\u7528with open()\u8bed\u53e5\u8bfb\u53d6txt\u6587\u4ef6<\/h2>\n<\/p>\n
2.1 \u57fa\u672c\u7528\u6cd5<\/h3>\n<\/p>\n
with open()<\/code>\u8bed\u53e5\u662f\u4e00\u79cd\u66f4\u5b89\u5168\u3001\u66f4\u7b80\u6d01\u7684\u6587\u4ef6\u64cd\u4f5c\u65b9\u5f0f\u3002\u5176\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<\/p>\nwith open('filename', mode) as file:<\/p>\nfilename<\/code>\u662f\u8981\u6253\u5f00\u7684\u6587\u4ef6\u7684\u540d\u79f0\uff0cmode<\/code>\u662f\u6253\u5f00\u6587\u4ef6\u7684\u6a21\u5f0f\uff0c\u5e38\u89c1\u7684\u6a21\u5f0f\u4e0e\u524d\u9762\u4ecb\u7ecd\u7684\u76f8\u540c\u3002<\/p>\n<\/p>\n2.2 \u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9<\/h3>\n<\/p>\n
read()<\/code>\u65b9\u6cd5\u8bfb\u53d6\u6587\u4ef6\u7684\u5168\u90e8\u5185\u5bb9\uff0creadline()<\/code>\u65b9\u6cd5\u8bfb\u53d6\u6587\u4ef6\u7684\u4e00\u884c\u5185\u5bb9\uff0creadlines()<\/code>\u65b9\u6cd5\u8bfb\u53d6\u6587\u4ef6\u7684\u6240\u6709\u884c\u5e76\u8fd4\u56de\u4e00\u4e2a\u5217\u8868\u3002<\/p>\n<\/p>\n# \u8bfb\u53d6\u6587\u4ef6\u7684\u5168\u90e8\u5185\u5bb9<\/p>\n\u8bfb\u53d6\u6587\u4ef6\u7684\u4e00\u884c\u5185\u5bb9<\/strong><\/h2>\n
\u8bfb\u53d6\u6587\u4ef6\u7684\u6240\u6709\u884c\u5e76\u8fd4\u56de\u4e00\u4e2a\u5217\u8868<\/strong><\/h2>\n
\u4e09\u3001\u4f7f\u7528read()\u65b9\u6cd5\u8bfb\u53d6txt\u6587\u4ef6<\/h2>\n<\/p>\n
3.1 \u8bfb\u53d6\u5168\u90e8\u5185\u5bb9<\/h3>\n<\/p>\n
read()<\/code>\u65b9\u6cd5\u7528\u4e8e\u8bfb\u53d6\u6587\u4ef6\u7684\u5168\u90e8\u5185\u5bb9\uff0c\u5176\u57fa\u672c\u7528\u6cd5\u5982\u4e0b\uff1a<\/p>\n<\/p>\nwith open('example.txt', 'r') as file:<\/p>\n3.2 \u8bfb\u53d6\u6307\u5b9a\u957f\u5ea6\u7684\u5185\u5bb9<\/h3>\n<\/p>\n
read(size)<\/code>\u65b9\u6cd5\u7528\u4e8e\u8bfb\u53d6\u6307\u5b9a\u957f\u5ea6\u7684\u5185\u5bb9\uff0c\u5176\u4e2dsize<\/code>\u662f\u8981\u8bfb\u53d6\u7684\u5b57\u7b26\u6570\u3002<\/p>\n<\/p>\nwith open('example.txt', 'r') as file:<\/p>\n\u56db\u3001\u4f7f\u7528readline()\u65b9\u6cd5\u8bfb\u53d6txt\u6587\u4ef6<\/h2>\n<\/p>\n
4.1 \u8bfb\u53d6\u4e00\u884c\u5185\u5bb9<\/h3>\n<\/p>\n
readline()<\/code>\u65b9\u6cd5\u7528\u4e8e\u8bfb\u53d6\u6587\u4ef6\u7684\u4e00\u884c\u5185\u5bb9\uff0c\u5176\u57fa\u672c\u7528\u6cd5\u5982\u4e0b\uff1a<\/p>\n<\/p>\nwith open('example.txt', 'r') as file:<\/p>\n4.2 \u8bfb\u53d6\u591a\u884c\u5185\u5bb9<\/h3>\n<\/p>\n
with open('example.txt', 'r') as file:<\/p>\n\u4e94\u3001\u4f7f\u7528readlines()\u65b9\u6cd5\u8bfb\u53d6txt\u6587\u4ef6<\/h2>\n<\/p>\n
5.1 \u8bfb\u53d6\u6240\u6709\u884c\u5e76\u8fd4\u56de\u5217\u8868<\/h3>\n<\/p>\n
readlines()<\/code>\u65b9\u6cd5\u7528\u4e8e\u8bfb\u53d6\u6587\u4ef6\u7684\u6240\u6709\u884c\u5e76\u8fd4\u56de\u4e00\u4e2a\u5217\u8868\uff0c\u5176\u57fa\u672c\u7528\u6cd5\u5982\u4e0b\uff1a<\/p>\n<\/p>\nwith open('example.txt', 'r') as file:<\/p>\n5.2 \u8bfb\u53d6\u5e76\u5904\u7406\u5927\u6587\u4ef6<\/h3>\n<\/p>\n
readlines()<\/code>\u65b9\u6cd5\u4f1a\u5c06\u6587\u4ef6\u7684\u6240\u6709\u884c\u52a0\u8f7d\u5230\u5185\u5b58\u4e2d\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5185\u5b58\u4e0d\u8db3\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u7ed3\u6784\u9010\u884c\u5904\u7406\u6587\u4ef6\u5185\u5bb9\u3002<\/p>\n<\/p>\nwith open('example.txt', 'r') as file:<\/p>\n\u516d\u3001\u4f7f\u7528pandas\u8bfb\u53d6txt\u6587\u4ef6<\/h2>\n<\/p>\n
6.1 \u57fa\u672c\u7528\u6cd5<\/h3>\n<\/p>\n
pandas<\/code>\u5e93\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u6570\u636e\u5904\u7406\u529f\u80fd\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u8bfb\u53d6txt\u6587\u4ef6\uff0c\u5e76\u5c06\u5176\u8f6c\u6362\u4e3aDataFrame\u5bf9\u8c61\u3002\u5176\u57fa\u672c\u7528\u6cd5\u5982\u4e0b\uff1a<\/p>\n<\/p>\nimport pandas as pd<\/p>\n6.2 \u8bfb\u53d6\u6307\u5b9a\u5217<\/h3>\n<\/p>\n
usecols<\/code>\u53c2\u6570\u6307\u5b9a\u8981\u8bfb\u53d6\u7684\u5217\u3002<\/p>\n<\/p>\ndf = pd.read_csv('example.txt', delimiter='\\t', usecols=['column1', 'column2'])<\/p>\n6.3 \u5904\u7406\u7f3a\u5931\u503c<\/h3>\n<\/p>\n
na_values<\/code>\u53c2\u6570\u6307\u5b9a\u7f3a\u5931\u503c\uff0c\u5e76\u4f7f\u7528fillna<\/code>\u65b9\u6cd5\u586b\u5145\u7f3a\u5931\u503c\u3002<\/p>\n<\/p>\ndf = pd.read_csv('example.txt', delimiter='\\t', na_values='NA')<\/p>\n\u4e03\u3001\u4f7f\u7528numpy\u8bfb\u53d6txt\u6587\u4ef6<\/h2>\n<\/p>\n
7.1 \u57fa\u672c\u7528\u6cd5<\/h3>\n<\/p>\n
numpy<\/code>\u5e93\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u6570\u7ec4\u64cd\u4f5c\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u8bfb\u53d6txt\u6587\u4ef6\uff0c\u5e76\u5c06\u5176\u8f6c\u6362\u4e3a\u6570\u7ec4\u3002\u5176\u57fa\u672c\u7528\u6cd5\u5982\u4e0b\uff1a<\/p>\n<\/p>\nimport numpy as np<\/p>\n7.2 \u8bfb\u53d6\u6307\u5b9a\u5217<\/h3>\n<\/p>\n
usecols<\/code>\u53c2\u6570\u6307\u5b9a\u8981\u8bfb\u53d6\u7684\u5217\u3002<\/p>\n<\/p>\ndata = np.loadtxt('example.txt', delimiter='\\t', usecols=(0, 1))<\/p>\n7.3 \u5904\u7406\u7f3a\u5931\u503c<\/h3>\n<\/p>\n
genfromtxt<\/code>\u65b9\u6cd5\u8bfb\u53d6\u5305\u542b\u7f3a\u5931\u503c\u7684txt\u6587\u4ef6\uff0c\u5e76\u4f7f\u7528np.nan<\/code>\u8868\u793a\u7f3a\u5931\u503c\u3002<\/p>\n<\/p>\ndata = np.genfromtxt('example.txt', delimiter='\\t', missing_values='NA', filling_values=np.nan)<\/p>\n\u516b\u3001\u8bfb\u53d6\u5927\u6587\u4ef6\u7684\u4f18\u5316\u65b9\u6cd5<\/h2>\n<\/p>\n
8.1 \u5206\u6279\u8bfb\u53d6<\/h3>\n<\/p>\n
def read_in_chunks(file_object, chunk_size=1024):<\/p>\n8.2 \u4f7f\u7528\u5185\u5b58\u6620\u5c04<\/h3>\n<\/p>\n
import mmap<\/p>\n\u4e5d\u3001\u8bfb\u53d6\u538b\u7f29\u6587\u4ef6<\/h2>\n<\/p>\n
9.1 \u8bfb\u53d6gzip\u6587\u4ef6<\/h3>\n<\/p>\n
gzip<\/code>\u6a21\u5757\u8bfb\u53d6gzip\u538b\u7f29\u6587\u4ef6\u3002<\/p>\n<\/p>\nimport gzip<\/p>\n9.2 \u8bfb\u53d6zip\u6587\u4ef6<\/h3>\n<\/p>\n
zipfile<\/code>\u6a21\u5757\u8bfb\u53d6zip\u538b\u7f29\u6587\u4ef6\u3002<\/p>\n<\/p>\nimport zipfile<\/p>\n\u5341\u3001\u8bfb\u53d6\u7279\u6b8a\u683c\u5f0f\u7684txt\u6587\u4ef6<\/h2>\n<\/p>\n
10.1 \u8bfb\u53d6JSON\u683c\u5f0f\u6587\u4ef6<\/h3>\n<\/p>\n
json<\/code>\u6a21\u5757\u8bfb\u53d6JSON\u683c\u5f0f\u7684txt\u6587\u4ef6\u3002<\/p>\n<\/p>\nimport json<\/p>\n10.2 \u8bfb\u53d6XML\u683c\u5f0f\u6587\u4ef6<\/h3>\n<\/p>\n
xml.etree.ElementTree<\/code>\u6a21\u5757\u8bfb\u53d6XML\u683c\u5f0f\u7684txt\u6587\u4ef6\u3002<\/p>\n<\/p>\nimport xml.etree.ElementTree as ET<\/p>\n10.3 \u8bfb\u53d6CSV\u683c\u5f0f\u6587\u4ef6<\/h3>\n<\/p>\n
csv<\/code>\u6a21\u5757\u8bfb\u53d6CSV\u683c\u5f0f\u7684txt\u6587\u4ef6\u3002<\/p>\n<\/p>\nimport csv<\/p>\n\u603b\u7ed3<\/h2>\n<\/p>\n
open()<\/code>\u51fd\u6570\u3001with open()<\/code>\u8bed\u53e5\u3001read()<\/code>\u65b9\u6cd5\u3001readline()<\/code>\u65b9\u6cd5\u548creadlines()<\/code>\u65b9\u6cd5\u7b49\u3002\u5176\u4e2d\uff0c\u6700\u5e38\u7528\u7684\u65b9\u5f0f\u662f\u4f7f\u7528with open()<\/code>\u8bed\u53e5\uff0c\u56e0\u4e3a\u5b83\u80fd\u81ea\u52a8\u7ba1\u7406\u6587\u4ef6\u8d44\u6e90\u7684\u91ca\u653e\uff0c\u907f\u514d\u624b\u52a8\u5173\u95ed\u6587\u4ef6\u7684\u9ebb\u70e6<\/strong>\u3002\u6b64\u5916\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528pandas<\/code>\u3001numpy<\/code>\u7b49\u5e93\u6765\u8bfb\u53d6\u548c\u5904\u7406txt\u6587\u4ef6\uff0c\u7279\u522b\u662f\u5bf9\u4e8e\u5927\u6587\u4ef6\u548c\u7279\u6b8a\u683c\u5f0f\u7684\u6587\u4ef6\u3002\u901a\u8fc7\u5408\u7406\u9009\u62e9\u548c\u7ec4\u5408\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u9ad8\u6548\u5730\u8bfb\u53d6\u548c\u5904\u7406txt\u6587\u4ef6\uff0c\u6ee1\u8db3\u4e0d\u540c\u573a\u666f\u4e0b\u7684\u6570\u636e\u5904\u7406\u9700\u6c42\u3002<\/p>\n<\/p>\n\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
\u8981\u4f7f\u7528Python\u8bfb\u53d6txt\u6587\u4ef6\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684open()<\/code>\u51fd\u6570\u3002\u901a\u8fc7\u6307\u5b9a\u6587\u4ef6\u8def\u5f84\u548c\u6a21\u5f0f\uff08\u5982'r'\u8868\u793a\u8bfb\u53d6\uff09\uff0c\u4f60\u53ef\u4ee5\u8f7b\u677e\u6253\u5f00\u6587\u4ef6\u5e76\u8bfb\u53d6\u5185\u5bb9\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u57fa\u672c\u793a\u4f8b\uff1a <\/p>\nwith open('file.txt', 'r') as file:\n content = file.read()\n print(content)\n<\/code><\/pre>\nwith<\/code>\u8bed\u53e5\u786e\u4fdd\u5728\u64cd\u4f5c\u5b8c\u6210\u540e\u81ea\u52a8\u5173\u95ed\u6587\u4ef6\u3002<\/p>\n
\u5f53\u8bfb\u53d6\u5305\u542b\u7279\u6b8a\u5b57\u7b26\u6216\u4e0d\u540c\u8bed\u8a00\u7684txt\u6587\u4ef6\u65f6\uff0c\u6587\u4ef6\u7684\u7f16\u7801\u683c\u5f0f\u53ef\u80fd\u4f1a\u5bfc\u81f4\u8bfb\u53d6\u9519\u8bef\u3002\u53ef\u4ee5\u901a\u8fc7\u5728open()<\/code>\u51fd\u6570\u4e2d\u6307\u5b9aencoding<\/code>\u53c2\u6570\u6765\u89e3\u51b3\u3002\u4f8b\u5982\uff0c\u4f7f\u7528utf-8<\/code>\u7f16\u7801\uff1a <\/p>\nwith open('file.txt', 'r', encoding='utf-8') as file:\n content = file.read()\n<\/code><\/pre>\n
\u9010\u884c\u8bfb\u53d6txt\u6587\u4ef6\u53ef\u4ee5\u4f7f\u7528readline()<\/code>\u65b9\u6cd5\u6216\u76f4\u63a5\u904d\u5386\u6587\u4ef6\u5bf9\u8c61\u3002\u9010\u884c\u8bfb\u53d6\u6709\u52a9\u4e8e\u5904\u7406\u8f83\u5927\u7684\u6587\u4ef6\u800c\u4e0d\u5360\u7528\u8fc7\u591a\u5185\u5b58\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a <\/p>\nwith open('file.txt', 'r') as file:\n for line in file:\n print(line.strip()) # \u4f7f\u7528strip()\u53bb\u9664\u884c\u672b\u7684\u6362\u884c\u7b26\n<\/code><\/pre>\n