摘要：
-- coding: utf-8 -- """ Created on Tue Sep 17 19:40:05 2024 @author: 朱尧 """ from numpy.random import randint import numpy as np a = randint(10,20,16) 阅读全文
posted @ 2024-10-27 23:43
世梦
阅读(19)
评论(0)
推荐(0)
摘要：
-- coding: utf-8 -- """ Created on Tue Sep 17 19:39:40 2024 @author: 朱尧 """ a = [[1,2,3],[4,5,6],[7,8,9]] d = [c for b in a for c in b] print(d) 阅读全文
posted @ 2024-10-27 23:42
世梦
阅读(13)
评论(0)
推荐(0)
摘要：
-- coding: utf-8 -- """ Created on Tue Sep 17 19:37:31 2024 @author: 朱尧 """ L = ['abc', 12, 3.45, 'Python', 2.789] print(L) print(L[0]) L[0] = 'a' L[1 阅读全文
posted @ 2024-10-27 23:41
世梦
阅读(14)
评论(0)
推荐(0)
摘要：
with open('统计2.2.txt') as fp: L1 = []; L2 = []; for line in fp: L1.append(len(line)) L2.append(len(line.strip())) data=[str(num)+'\t'for num in L2] pr 阅读全文
posted @ 2024-10-27 23:39
世梦
阅读(20)
评论(0)
推荐(0)
摘要：
import pandas as pd import numpy as np a=pd.DataFrame(np.random.randint(1,6,(5,3)),index=['a','b','c','d','e'],columns=['one','two','three']) a.loc['a 阅读全文
posted @ 2024-10-27 23:39
世梦
阅读(23)
评论(0)
推荐(0)
摘要：
import pandas as pd import numpy as np d=pd.DataFrame(np.random.randint(1,6,(10,4)),columns=list("ABCD")) d1=d[:4] d2=d[4:] dd=pd.concat([d1,d2]) s1=d 阅读全文
posted @ 2024-10-27 23:38
世梦
阅读(15)
评论(0)
推荐(0)
摘要：
import pandas as pd a=pd.read_csv("统计2.2.csv",usecols=range(1,5)) b=pd.read_excel("统计2.2.xlsx","Sheet2",usecols=range(1,5)) 阅读全文
posted @ 2024-10-27 23:37
世梦
阅读(16)
评论(0)
推荐(0)
摘要：
程序文件ex2_38_1.py import pandas as pd import numpy as np dates=pd.date_range(start='20191101', end='20191124', freq='D') a1=pd.DataFrame(np.random.randn 阅读全文
posted @ 2024-10-27 23:36
世梦
阅读(16)
评论(0)
推荐(0)
摘要：
程序文件ex2_37.py import pandas as pd import numpy as np dates=pd.date_range(start='20191101',end='20191124',freq='D') a1=pd.DataFrame(np.random.randn(24, 阅读全文
posted @ 2024-10-27 23:35
世梦
阅读(24)
评论(0)
推荐(0)
摘要：
程序文件ex2_36.py import numpy as np a = np.eye(4) b = np.rot90(a) c, d = np.linalg.eig(b) print('特征值为：', c) print('特征向量为：\n', d) 阅读全文
posted @ 2024-10-27 23:35
世梦
阅读(17)
评论(0)
推荐(0)
浙公网安备 33010602011771号