python打印多个变量

Like other programming languages, In python also, we can define and print the multiple variables. Here, we see how can we print the single and multiple variables using the print() function?

像其他编程语言一样，在python中，我们也可以定义和打印多个变量 。 在这里，我们看到如何使用print()函数打印单个和多个变量？

In Python, single variable can be printed like this,

在Python中，可以这样打印单个变量，

print(variable)

Example:

例：

# Python program to print single variable
name = "Mike"
age = 21
country = "USA"
# printing variables one by one
print(name)
print(age)
print(country)
print() # prints a newline
# printing variables one by one
# with messages
print("Name:", name)
print("Age:", age)
print("Country:", country)

Output:

输出：

Mike
21
USA
Name: Mike
Age: 21
Country: USA

打印多个变量 (Printing multiple variables)

There are following methods to print multiple variables,

有以下方法可以打印多个变量，

• Method 1: Passing multiple variables as arguments separating them by commas

  方法1 ：传递多个变量作为以逗号分隔它们的参数

• Method 2: Using format() method with curly braces ({})

  方法2 ：使用带有大括号({})的format()方法

• Method 3: Using format() method with numbers in curly braces ({0})

  方法3 ：将format()方法与大括号({0})中的数字一起使用

• Method 4: Using format() method with explicit name in curly braces ({v})

  方法4 ：在大括号({v})中使用具有显式名称的format()方法

• Method 5: Using string concatenation

  方法5 ：使用字符串连接

Let's understand each method in the details.

让我们详细了解每种方法。

Method 1:

方法1：

To print multiple variables using the print() function, we need to provide the variable names as arguments separated by the commas.

要使用print()函数打印多个变量，我们需要提供变量名称作为用逗号分隔的参数。

Note: print() function prints space after the value of each variable, space is the default value of sep parameter – which is an optional parameter in print() function, by using this parameter, we can specify the separator value.

注意： print()函数在每个变量的值之后打印空格，space是sep参数的默认值–这是print()函数中的可选参数，通过使用此参数，我们可以指定分隔符值。

Syntax:

句法：

print(variable1, varaible2, variable3, ...)

Example:

例：

# Python program to print multiple variables
name = "Mike"
age = 21
country = "USA"
# printing variables one by one
print("Printing normally...")
print(name, age, country)
print() # prints a new line
# Printing with comma seprator
print("Printing with comma seprator...")
print(name, age, country, sep=',')
print() # prints a new line
# printing variables with messages
print("Printing with messages...")
print("Name:", name, "Age:", age, "Country:", country)

Output:

输出：

Printing normally...
Mike 21 USA
Printing with comma seprator...
Mike,21,USA
Printing with messages...
Name: Mike Age: 21 Country: USA

Method 2:

方法2：

By using the new-style string formatting (format() method), we can also print the multiple variables. Here, we have to specify the curly braces ({}) where we have to print the values and in the format() method, provide the multiple variables separated by the commas.

通过使用新的字符串格式设置( format()方法)，我们还可以打印多个变量。 在这里，我们必须指定花括号( {}) ，在其中我们必须打印值，并在format()方法中提供多个用逗号分隔的变量。

Syntax:

句法：

print("{} {} {}".format(variable1, variable2, variable2)

Example:

例：

# Python program to print multiple variables
# using format() method
name = "Mike"
age = 21
country = "USA"
print("{} {} {}".format(name, age, country))
print("Name: {}, Age: {}, Country: {}".format(name, age, country))

Output:

输出：

Mike 21 USA
Name: Mike, Age: 21, Country: USA

Method 3:

方法3：

By using the new-style string formatting with numbers (format() method), we can also print the multiple variables. This is similar to method 2 but here we can use the numbers inside the curly braces ({0}), it will help for reordering the values.

通过使用带数字的新型字符串格式设置( format()方法)，我们还可以打印多个变量。 这类似于方法2，但是在这里我们可以使用花括号( {0} )中的数字，这将有助于重新排列值。

Note: Number 0 represents the first variable in format() method, 1 represents the second, and so on.

注意：数字0代表format()方法中的第一个变量，数字1代表第二个变量，依此类推。

Syntax:

句法：

print("{0} {1} {2}".format(variable1, variable2, variable2)

Example:

例：

# Python program to print multiple variables
# using format() method with numbers
name = "Mike"
age = 21
country = "USA"
print("{0} {1} {2}".format(name, age, country))
print("Name: {0}, Age: {1}, Country: {2}".format(name, age, country))
print("Country: {2}, Name: {0}, Age: {1}".format(name, age, country))
# printing all values 2-2 times
print("{0} {0} {1} {1} {2} {2}".format(name, age, country))

Output:

输出：

Mike 21 USA
Name: Mike, Age: 21, Country: USA
Country: USA, Name: Mike, Age: 21
Mike Mike 21 21 USA USA

Method 4:

方法4：

By using the new-style string formatting with explicit names (format() method), we can also print the multiple variables. This is similar to method 3 but here we can use the explicit names inside the curly braces ({n}), it will help for remembering the order and variable names.

通过使用带有显式名称的新型字符串格式设置( format()方法)，我们还可以打印多个变量。 这类似于方法3，但在这里我们可以在花括号( {n} )中使用显式名称，这将有助于记住顺序和变量名称。

Syntax:

句法：

print("{v1} {v2} {v3}".format(v1=variable1, v2=variable2, v3=variable2)

Example:

例：

# Python program to print multiple variables
# using format() method with explicit names
name = "Mike"
age = 21
country = "USA"
print("{n} {a} {c}".format(n=name, a=age, c=country))
print("Name: {n}, Age: {a}, Country: {c}".format(n=name, a=age, c=country))
print("Country: {c}, Name: {n}, Age: {a}".format(n=name, a=age, c=country))
# printing all values 2-2 times
print("{n} {n} {a} {a} {c} {c}".format(n=name, a=age, c=country))

Output:

输出：

Mike 21 USA
Name: Mike, Age: 21, Country: USA
Country: USA, Name: Mike, Age: 21
Mike Mike 21 21 USA USA

Method 5:

方法5：

We can print multiple variables by concatenating them as a string.

我们可以通过将多个变量串联为字符串来打印多个变量。

Syntax:

句法：

print(str(variable1) + str(variable2) + str(variable3))

Note:

注意：

• If we want to display any message or separator, we can also concatenate them with the variables.

  如果要显示任何消息或分隔符，也可以将它们与变量连接起来。

• If a variable is a string, then there is no need to use str().

  如果变量是字符串，则无需使用str() 。

Example:

例：

# Python program to print multiple variables
# using string concatenation
name = "Mike"
age = 21
country = "USA"
print("Without separator...")
print(name + str(age) + country)
print("Separating by commas...")
print(name + "," + str(age) + "," + country)
print("Printing with messages...")
print("Name: " + name + " Age: " + str(age) + " Country: " + country)

Output:

输出：

Without separator...
Mike21USA
Separating by commas...
Mike,21,USA
Printing with messages...
Name: Mike Age: 21 Country: USA

翻译自: https://www.includehelp.com/python/print-multiple-variables.aspx

python打印多个变量