importunittest from src.demo.calculatorimportCalculatorclassTestCalculator(unittest.TestCase):deftest_add(self):c=Calculator()result=c.add(3,5)self.assertEqual(result,8)deftest_sub(self):c=Calculator()result=c.sub(10,5)self.assertEqual(result,5)deftest_mul(self):c=Calculator()result=c.mul(...
| 整数或浮点→字符串 |str( )|float_variable=float(2.15)``string_variable=str(float_variable)``print(string_variable)| | 字符串→列表 |列表()|greeting="Hello"``a_list=list(greeting)``print(a_list)| | 字符串→集合 |set( )|fruit="Banana"``a_set=set(fruit)``print(a_set)| 操纵变...
set_axis isnull sparse first_valid_index combine_first ewm notnull empty mask truncate to_csv bool at clip radd to_markdown value_counts first isna between_time replace sample idxmin div iloc add_suffix pipe to_sql items max rsub flags sem to_string to_excel prod fillna backfill align ...
It’s easy to index and slice NumPy arrays regardless of their dimension,meaning whether they are vectors or matrices. 索引和切片NumPy数组很容易,不管它们的维数如何,也就是说它们是向量还是矩阵。 With one-dimension arrays, we can index a given element by its position, keeping in mind that indice...
第1 章 起步 1-1 python.org:浏览Python主页(http://python.org/),寻找你感兴趣的主题。你对Python越熟悉,这个网站对你来说就越有用。 1-2 输入错误:打开你刚创建的文件hello_world.py,在代码中添加一个输入错误,再运行这个程序。输入错误会
ax.set_xlim(x_min, x_max) ax.set_ylim(y_min, y_max) # 将刻度和轴设置为相等,以避免失真 ax.set_xticks(x_ticks) ax.set_yticks(y_ticks) ax.axis('equal') plt.show() point_symbol_map(polygons, multipolygons, center_poly, center_multipoly, ...
class FakeRepository(repository.AbstractRepository): def __init__(self, batches): self._batches = set(batches) def add(self, batch): self._batches.add(batch) def get(self, reference): return next(b for b in self._batches if b.reference == reference) def list(self): return list(self...
Next we need to load in the data and store it into X (input features) and y (target). The parameter as_frame is set equal to True so we do not lose the feature names when loading the data. (sklearn version older than 0.23 must skip the as_frame argument as it is not supported)...
now()102 fnDisplay = lambda candidate: display(candidate, startTime)103 fnGetFitness = lambda candidate: getFitness(candidate, rules)104 best = genetic.getBest(fnGetFitness, fnDisplay, len(one_neighbor_other), optimalValue, geneset)105 self.assertEqual(best.Fitness, optimalValue)106...
Now that we have our guess, we can test to see if the current user's password is equal to our guessed value. Crypted passwords use a randomizing value called a salt to make them more difficult to crack. Each time, a different salt value is used so that the encrypted value will be ...