the function definition, it can be called with zero, one, two or more parameters. class Human: def sayHello(self, name=None): if name is not None: print('Hello ' else: print('Hello ') #Create Instance OOP in Python 42 obj = Human() #Call the method, else part will be executed obj.sayHello() #Call the method with a strings. In string we parse text, analyse text semantics, and do data mining – and all this data is human consumed text. The string in Python is immutable. String Manipulation In Python, string can

actual I/O 'sda2': …} Disks >>> import time >>> import psutil >>> from psutil._common import bytes2human >>> while True: ... io1 = psutil.disk_io_counters() ... time.sleep(1) ... io2 = psutil bytes_written = io2.write_bytes - io1.write_bytes ... print("%-7s/s %-7s/s" % (bytes2human(bytes_read), bytes2human(bytes_written))) ... 0.0 B/s 0.0 B/s 595.6 M/s 688.0 K/s 451.4 M/s 279

Nothing in conda actually inspects the build string. Strings such as np18py34_1 are designed only for human read- ability and conda never parses them. build_number integer A non-negative integer representing using --explicit. -e, --export Output explicit, machine-readable requirement strings instead of human-readable lists of packages. This output may be used by conda create --file. -r, --revisions List the name of the current Linux distribution, as a human-readable version([pretty, best]) Return the version of the current Linux distribution, as a human-readable version_parts([best]) Return the version

Nothing in conda actually inspects the build string. Strings such as np18py34_1 are designed only for human read- ability and conda never parses them. build_number integer A non-negative integer representing using --explicit. -e, --export Output explicit, machine-readable requirement strings instead of human-readable lists of packages. This output may be used by conda create --file. -r, --revisions List the name of the current Linux distribution, as a human-readable version([pretty, best]) Return the version of the current Linux distribution, as a human-readable version_parts([best]) Return the version

Nothing in conda actually inspects the build string. Strings such as np18py34_1 are designed only for human read- ability and conda never parses them. build_number integer A non-negative integer representing using --explicit. -e, --export Output explicit, machine-readable requirement strings instead of human-readable lists of packages. This output may be used by conda create --file. -r, --revisions List the name of the current Linux distribution, as a human-readable version([pretty, best]) Return the version of the current Linux distribution, as a human-readable version_parts([best]) Return the version

Nothing in conda actually inspects the build string. Strings such as np18py34_1 are designed only for human read- ability and conda never parses them. build_number integer A non-negative integer representing using --explicit. -e, --export Output explicit, machine-readable requirement strings instead of human-readable lists of packages. This output may be used by conda create --file. -r, --revisions List the name of the current Linux distribution, as a human-readable version([pretty, best]) Return the version of the current Linux distribution, as a human-readable version_parts([best]) Return the version

Nothing in conda actually inspects the build string. Strings such as np18py34_1 are designed only for human read- ability and conda never parses them. build_number integer A non-negative integer representing using --explicit. -e, --export Output explicit, machine-readable requirement strings instead of human-readable lists of packages. This output may be used by conda create --file. -r, --revisions List the name of the current Linux distribution, as a human-readable version([pretty, best]) Return the version of the current Linux distribution, as a human-readable version_parts([best]) Return the version

Nothing in conda actually inspects the build string. Strings such as np18py34_1 are designed only for human read- ability and conda never parses them. build_number integer A non-negative integer representing using --explicit. -e, --export Output explicit, machine-readable requirement strings instead of human-readable lists of packages. This output may be used by conda create --file. -r, --revisions List the name of the current Linux distribution, as a human-readable version([pretty, best]) Return the version of the current Linux distribution, as a human-readable version_parts([best]) Return the version

Nothing in conda actually inspects the build string. Strings such as np18py34_1 are designed only for human read- ability and conda never parses them. build_number integer A non-negative integer representing using --explicit. -e, --export Output explicit, machine-readable requirement strings instead of human-readable lists of packages. This output may be used by conda create --file. -r, --revisions List the name of the current Linux distribution, as a human-readable version([pretty, best]) Return the version of the current Linux distribution, as a human-readable version_parts([best]) Return the version

Nothing in conda actually inspects the build string. Strings such as np18py34_1 are designed only for human read- ability and conda never parses them. build_number integer A non-negative integer representing using --explicit. -e, --export Output explicit, machine-readable requirement strings instead of human-readable lists of packages. This output may be used by conda create --file. -r, --revisions List the name of the current Linux distribution, as a human-readable version([pretty, best]) Return the version of the current Linux distribution, as a human-readable version_parts([best]) Return the version