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Convert columns to string in Pandas

...der, # Setup df = pd.DataFrame({'A': ['a', 'b', 'c'], 'B': [{}, [1, 2, 3], 123]}) df A B 0 a {} 1 b [1, 2, 3] 2 c 123 Upto pandas 0.25, there was virtually no way to distinguish that "A" and "B" do not have the same type of data. # pandas <= 0.25 df.dtypes A ...
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Press alt + numeric in bash and you get (arg [numeric]) what is that?

... + numeric and then you press a character, you'll get num caracters: (arg: 123) + a -> 123 times "a" share | improve this answer | follow | ...
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How can I selectively escape percent (%) in Python strings?

...ered May 21 '12 at 7:46 openmeet123openmeet123 42933 silver badges22 bronze badges ...
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Pretty-Print JSON in Java

...1111") // "number":"555-1111", .write("extension", "123") // "extension":"123" .writeEnd() // }, .writeStartObject() // { .write("number", "555-2222") // "number":"555-2222", ...
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Simple insecure two-way data “obfuscation”?

...leAES { // Change these keys private byte[] Key = __Replace_Me__({ 123, 217, 19, 11, 24, 26, 85, 45, 114, 184, 27, 162, 37, 112, 222, 209, 241, 24, 175, 144, 173, 53, 196, 29, 24, 26, 17, 218, 131, 236, 53, 209 }); // a hardcoded IV should not be used for production AES-CBC code // ...
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PadLeft function in T-SQL

...as the number gets bigger it should ALWAYS work.... regardless if its 1 or 123456789... So if your max value is 123456... you would see 0000123456 and if your min value is 1 you would see 0000000001 share | ...
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Extracting bits with a single multiplication

...tsThroughAndWithMultiplication.smt2 The result is: sat (model (define-fun mask () (_ BitVec 64) #x8080808080808080) (define-fun multiplicand () (_ BitVec 64) #x0002040810204081) ) Bingo! It reproduces the result given in the original post in 0.06 seconds. Looking at this from a mo...
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【AI2+AI】人工智能舞姿识别App - 创客硬件开发 - 清泛IT社区,为创新赋能!

...请使用PC浏览器查看)。 文章转载自:https://mc.dfrobot.com.cn/thread-308376-1-1.html 文章aia源码如下: 人工智能舞姿识别APP难度: 中级课程类型: 教程学科: 计算机科学年级水平:9~12年级 本教程由Youth Mobile Po...
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What is the difference between precision and scale?

...point, may also be set as negative for rounding. Example: NUMBER(7,5): 12.12345 NUMBER(5,0): 12345 More details on the ORACLE website: https://docs.oracle.com/cd/B28359_01/server.111/b28318/datatype.htm#CNCPT1832 share ...
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How do I work around JavaScript's parseInt octal behavior?

... Number needs quotes around the 08. Also just be warned, Number('08.123') will produce 8.123 as its output. If you really want an integer, don't use Number (or pattern-match your input to ensure integers only). – Jason S May 11 '09 at 22:22 ...