"iflen(str1)>0:print("The string is not empty.")else:print("The string is empty.") 1. 2. 3. 4. 5. 6. 在上面的代码中,我们首先定义了一个字符串变量str1,并通过if语句判断该字符串的长度是否大于0。如果字符串不为空,就输出"The string is not empty.“;如果字符串为空,就输出"The stri...
1. 使用if语句判断字符串不为空 defis_string_not_empty(string):ifstring:returnTrueelse:returnFalse 1. 2. 3. 4. 5. 上述代码使用if语句来判断字符串是否为空。如果字符串不为空,即字符串长度大于0,则返回True;否则,返回False。 2. 使用len()函数判断字符串不为空 defis_string_not_empty(string):if...
print("The string is not empty") else: print("The string is empty") ``` 在这个例子中,如果`text`是空字符串,那么条件`if text`的结果将是`False`,因此会执行`else`语句,输出"The string is empty"。 另外需要注意的是,虽然空字符串被认为是`True`,但它在布尔运算中的优先级是低于其他非空字符串...
Astringis a Python data type that’s used to represent a piece of text. It’s written between quotes, either double quotes or single quotes and can be as short as zero characters, or empty string, or as long as you wish. Strings can beconcatenatedto build longer strings using the plus...
使用f-string(f +{})进行格式化输出,通过在字符串前加上f或F前缀,然后在字符串中使用{}表示占位符,并在{}中直接引用变量。 name ="scott"age =18# 格式化输出语法二 : f + {}print(f"My name is{name}; My age is{age}")# My name is scott; My age is 18 ...
query – execute a SQL command string Y - query_formatted – execute a formatted SQL command string Y - query_prepared – execute a prepared statement Y - prepare – create a prepared statement Y - describe_prepared – describe a prepared statement Y - delete_prepared – delete a prepared ...
import jsonfromoptparse import OptionParserfromoptparse import OptionGroupfromstringimport Template import codecs import platform def isWindows():returnplatform.system() =='Windows'DATAX_HOME=os.path.dirname(os.path.dirname(os.path.abspath(__file__))) ...
This is only possible when the string was created with a legacy API and _PyUnicode_Ready() has not been called yet. */ PyUnicode_WCHAR_KIND = 0, /* Return values of the PyUnicode_KIND() macro: */ PyUnicode_1BYTE_KIND = 1, PyUnicode_2BYTE_KIND = 2, PyUnicode_4BYTE_KIND = 4...
```# Python script to generate random textimport randomimport stringdef generate_random_text(length):letters = string.ascii_letters + string.digits + string.punctuationrandom_text = ''.join(random.choice(letters) for i in range(le...
pdb.run("fun(1, 0)") # (1) > <string>(1)<module>()->None (Pdb) n ZeroDivisionError: division by zero > <string>(1)<module>()->None (Pdb) 说明函数中抛出了 ZeroDivisionError 异常。继续输入 n 直到调试结束,返回到 >>> 状态。 > <string>(1)<module>()->None (Pdb) n --Return...