#加载数据 defload_exdata(filename):data=[]withopen(filename,'r')asf:forlineinf.readlines():line=line.split(',')current=[int(item)foriteminline]#5.5277,9.1302data.append(current)returndata data=load_exdata('ex1data2.txt');data=np.array(data,np.int64)x=data[:,(0,1)].reshape((-1,...
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...
withopen(filename,'r') as f: forlineinf.readlines(): 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(...
withopen(filename,'r') as f: forlineinf.readlines(): 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(...
>>> print mystring Hello world. # This swaps the variables in one line(!). # It doesn't violate strong typing because values aren't # actually being assigned, but new objects are bound to # the old names. >>> myvar, mystring = mystring, myvar ...
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...
# Python program to print multiple variablesname="Mike"age=21country="USA"# printing variables one by oneprint("Printing normally...")print(name, age, country)print()# prints a new line# Printing with comma sepratorprint("Printing with comma seprator...")print(name, age, country, sep=...
E501 line-too-long E701 multiple-statements-on-one-line-colon E702 multiple-statements-on-one-line-semicolon E703 useless-semicolon E711 none-comparison E712 true-false-comparison E713 not-in-test E714 not-is-test E721 type-comparison ...
"""This is a multiline comment. The following lines concatenate the two strings.""" >>> mystring="Hello" >>> mystring+=" world." >>>printmystring Hello world. # This swaps the variables in one line(!). # It doesn't violate strong typing because values aren't ...