Python allows you to assign values to multiple variables in one line. Python 允许您在一行中为多个变量赋值。 x, y, z = "Orange", "Banana", "Cherry" print(x) print(y) print(z) And you can assign the same value to multiple variables in one line. 您可以在一行中为多个变量分配相同的值...
PEP 8: multiple statements on one line (colon) 解决方法:多行语句写到一行了,比如:if x == 2: print('OK')要分成两行写 PEP 8: line too long (82 > 79 characters) 解决方法:超过了每行的最大长度限制79 PEP 8: Simplify chained comparison 可简化连锁比较(例如:if a >= 0 and a <= 9: ...
PEP 8: multiple statements on one line (colon) 解决方法:多行语句写到一行了,比如:if x == 2: print('OK')要分成两行写 PEP 8: line too long (82 > 79 characters) 解决方法:超过了每行的最大长度限制79 PEP 8: Simplifychained comparison 可简化连锁比较(例如:if a >= 0 and a <= 9: ...
data=load_exdata('ex1data2.txt');data=np.array(data,np.int64)x=data[:,(0,1)].reshape((-1,2))y=data[:,2].reshape((-1,1))m=y.shape[0]# Print out some data pointsprint('First 10 examples from the dataset: \n')print(' x = ',x[range(10),:],'\ny=',y[range(10),:...
PEP 8: multiple statements on one line (colon) 解决方法:多行语句写到一行了,比如:if x == 2: print('OK')要分成两行写 PEP 8: line too long (82 > 79 characters) 解决方法:超过了每行的最大长度限制79 PEP 8: Simplify chained comparison ...
line=line.split(',') current=[int(item)foriteminline] #5.5277,9.1302 data.append(current) returndata data=load_exdata('ex1data2.txt'); data=np.array(data,np.int64) x=data[:,(0,1)].reshape((-1,2)) y=data[:,2].reshape((-1,1)) ...
close() >>> print loadedlist ['This', 'is', 4, 13327] 其它杂项 数值判断可以链接使用,例如 1<a<3 能够判断变量 a 是否在1和3之间。 可以使用 del 删除变量或删除数组中的元素。 列表推导式(List Comprehension)提供了一个创建和操作列表的有力工具。列表推导式由一个表达式以及紧跟着这个表达式的for...
>>> print(z) 1 >>> Alternatively, you can assign multiple values to multiple variables in a single line. Syntax: , , ..., = <expr>, <expr>, ..., <expr> Example: x, y, z = 1, 2, "abcd" In the above example x, y and z simultaneously get the new values 1, 2 and "...
for eachItem in seq: if bool_func(eachItem): filtered_seq.append(eachItem) return filtered_seq 2、map(func,seq1[,seq2...]):将函数func作用于给定序列的每个元素,并用一个列表来提供返回值;如果func为None,func表现为身份函数,返回一个含有每个序列中元素集合的n个元组的列表。 map(function, seque...
In the example above, the variablejwas assigned to the string"shark", the variablekwas assigned to the float2.05, and the variablelwas assigned to the integer15. This approach to assigning multiple variables to multiple values in one line can keep your lines of code down, but make sure you...