point2.move(5,0)print(point2.calculate_distance(point1))assertpoint2.calculate_distance(point1) == point1.calculate_distance( point2 ) point1.move(3,4)print(point1.calculate_distance(point2))print(point1.calculate_distance(point1)) 结尾处的print语句给出了以下输出: 5.04.472135954999580.0 这...
global userspace,sheetname,if_add_flog,if_auto_load,if_auto_mkdir f1 = open(fileone,'r+') while 1: lines = f1.readlines(10) if not lines: break for line in lines: line=line.strip('\n') file_key = line.split('=')[0] file_value = line.split('=')[1] if file_key == ...
Docstring:print(value,...,sep=' ',end='\n',file=sys.stdout,flush=False)Prints the values to a stream,or to sys.stdout bydefault.Optional keyword arguments:file:a file-likeobject(stream);defaults to the current sys.stdout.sep:string inserted between values,defaulta space.end:string appended...
# set version def find_unique_price_using_set(products): unique_price_set = set() for _, price in products: unique_price_set.add(price) return len(unique_price_set) products = [ (143121312, 100), (432314553, 30), (32421912367, 150), (937153201, 30) ] print('number of unique pric...
print(a is b) # True a = sys.intern(b) print(id(a), id(b)) # 2989905230512 2989905230512 5. PyCharm对字符串进行了优化处理 6.字符串驻留机制的优缺点 当需要值相同的字符串时,可以直接从字符串池里拿来使用,避免频繁的创建和销毁,提升效率和节约内存,因此拼接字符串和修改字符串是会比较影响性能的...
(A),1): print(f'{f:18}',end='' if i%5 else '\n') factorize nbytes between to_list str argsort rdivmod argmax tolist item is_monotonic_increasingdt autocorr is_monotonic_decreasingview repeat name array map dtype divmod to_frame unique ravel searchsorted hasnans is_unique is_...
In the other examples, you get strings consisting of the object’s literals between quotes, which provide user-friendly representations of the objects. At first glance, these results may not seem useful. However, there are use cases where you need to use str(). For example, say that you ...
print "hello world"变成了print ("hello world") raw_input变成了input class B:变成了class B(): 3用Unicode编码,默认支持中文了 3的range就是2里的xrange 操作文件,3按字符,2按字节 ... python 文件类型 .py源码经编译==>.pyc字节码 .pyp优化字节码 用python...
a new function, which we’ll callsearch4letters. Be aware that PEP 8 suggests that all top-level functions are surrounded by two blank lines. All of this book’s downloads conform to this guideline, but the code we show on the printed page doesn’t (as space is at a premium here)...
join([l.strip() for l in lines[1:]]).strip() bbc_articles.append(body) len(bbc_articles) 2225 句子边界检测 我们将通过调用 NLP 对象来说明句子检测,对第一篇文章进行批处理: doc = nlp(bbc_articles[0]) type(doc) spacy.tokens.doc.Doc spaCy 从句法分析树中计算句子边界,因此标点符号和大写...