@#$%'codes= [ord(symbol)forsymbolinsymbolsiford(symbol) > 50]print(codes) codes= list(filter(lambdac: c > 50, map(ord, symbols)))print(codes) 笛卡尔积:用列表推导可以生成两个或以上的可迭代类型的笛卡儿积。笛卡儿积是一个列表,列表里的元素是由输入的可迭代类型的元素对构成的元组,因此笛卡儿积...
So, in this tutorial, we discussedPython turtle colorsand we have also covered different examples related to its implementation. Here is the list of examples that we have covered. Python turtle color Python turtle colors rgb Python turtle colors fill Python turtle color chart Python turtle color ...
midwest=pd.read_csv("https://raw.githubusercontent.com/selva86/datasets/master/midwest_filter.csv")# Prepare Data # Createasmany colorsasthere are unique midwest['category']categories=np.unique(midwest['category'])colors=[plt.cm.tab10(i/float(len(categories)-1))foriinrange(len(categories))...
color_palette()will accept the name of any seaborn palette or matplotlib colormap (exceptjet, which you should never use). It can also take a list of colors specified in any valid matplotlib format (RGB tuples, hex color codes, or HTML color names). The return value is always a list ...
df.loc[df['Award'].isin(PossibleNaNlist)]['Award'].value_counts() 我们可以将这两个series型数据使用to_frame方法转化为Dataframe型数据,并使用merge将两dataframe连接,做一个对比。 a = df.loc[df['Film'].isnull()]['Award'].value_counts().to_frame() ...
codes = [] paths = [] for shape_rec in sf.shapeRecords(): # if shape_rec.record[3] == region: if shape_rec.record[2] == region: pts = shape_rec.shape.points prt = list(shape_rec.shape.parts) + [len(pts)] for i in range(len(prt) - 1): ...
another_codes = list(filter(lambda c: c > 1, map(ord, symbols))) print(another_codes) 下面还有一个利用列表推导来计算笛卡尔积: colors = ["black", "white"] sizes = ["S", "M", "L"] tshirts = [(color, size) for color in colors for size in sizes] ...
tshirts = [(color, size)forcolorincolorsforsizeinsizes] 一行代码搞定!Life is short,use Python,list comprehension is wonderful,amazing。 注意这行代码有两个for循环,等价于: forcolorincolors:forsizeinsizes: 运行结果是: [('black','S'), ('black','M'), ('black','L'), ('white','S')...
threadlist[:] = new_pattern.threadlist Example 9Source File: colorspace.py From mmcv with Apache License 2.0 6 votes def convert_color_factory(src, dst): code = getattr(cv2, f'COLOR_{src.upper()}2{dst.upper()}') def convert_color(img): out_img = cv2.cvtColor(img, code) return...
Series:一维数组,类似list数据类型,用下标索引方式访问数据元素 Time-Series:时间序列,采用时间索引方式访问数据元素 DataFrame:二维表格型数据结构 Panel:三维数据,可装载多个DataFrame import pandas as pd s1 = pd.Series([100,'gd','gz']) print(s1) print('s1.shape=',s1.shape) print('s1.index=',s1....