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Use the insert method to add "lemon" as the second item in the fruits list. 使用insert方法将“柠檬”添加为fruits列表中的第二项。 #题目: fruits = ["apple", "banana", "cherry"] ___ "lemon") #答案: fruits = ["apple", "banana", "cherry"] fruits.insert(1, "lemon") Use the cor...
To insert a new list item, without replacing any of the existing values, we can use the insert() method.The insert() method inserts an item at the specified index:Example Insert "watermelon" as the third item: thislist = ["apple", "banana", "cherry"] thislist.insert(2, "watermelon...
ExampleGet your own Python Server Convert the tuple into a list to be able to change it: x = ("apple","banana","cherry") y =list(x) y[1] ="kiwi" x =tuple(y) print(x) Try it Yourself » Add Items Since tuples are immutable, they do not have a built-inappend()method, ...
ExampleGet your own Python Server Find the arc sine of a complex number: #import cmath for complex number operations import cmath#find the arc sine of a complex numberprint (cmath.asin(2 + 3j)) Try it Yourself » Definition and UsageThe cmath.asin() method returns the arc sine of...
ExampleGet your own Python Server Find the arctangent of a complex number: #import cmath for complex number operations import cmath#find the arc tangent of a complex numberprint (cmath.atan(2 + 3j)) Try it Yourself » Definition and UsageThe cmath.atan() method returns the arc ...
Tip: To calculate the standard deviation from a sample of data, look at the statistics.stdev() method. Syntaxstatistics.pstdev(data, xbar) Parameter ValuesParameterDescription data Required. The data values to be used (can be any sequence, list or iterator) xbar Optional. The mean of the ...
The cmath.phase() method returns the phase of a complex number.A complx number can be expressed in terms of its magnitude and angle. This angle is between vector (representing complex number) and positive x-axis is called Phase.Note: Output is always between -π and π....
ExampleGet your own Python Server Convert a complex number to polar coordinates form: #import cmath for complex number operations import cmath#find the polar coordinates of complex numberprint (cmath.polar(2 + 3j)) print (cmath.polar(1 + 5j)) Try it Yourself » ...
Python os.listdir() Method ❮ OS ModuleExampleGet your own Python Server Print a list of all entries in the current directory: #Import os Library import os #print all entries in current directory print (os.listdir()) Try it Yourself » ...