def install_pip(self, package, save=True, save_dev=False):
        """Installs a pip package.

        :param save: if `True`, pins the package to the Hydrogen requirements
            YAML file.
        :param save_dev: if `True`, pins the package as a development
            dependency to the Hydrogen requirements YAML file.
        :param return: a **single** :class:`Requirement` object, representing
            the installed version of the given package.
        """
        requirement = Requirement.coerce(package)
        click.echo("pip install " + requirement.package)
        cmd = envoy.run("pip install {}".format(str(requirement)))
        if cmd.status_code == 0:
            installed_packages = get_installed_pypackages()
            package = installed_packages[requirement.package]
            requirement.version = "=={}".format(package.version)
            if save:
                self.requirements["all"].add(requirement)
            if save_dev:
                self.requirements["dev"].add(requirement)
            if save or save_dev:
                self.requirements.save()
            return requirement
        else:
            fatal(cmd.std_err)
def create_connects(self):
        self.ui.spinBoxFuzzingStart.valueChanged.connect(self.on_fuzzing_start_changed)
        self.ui.spinBoxFuzzingEnd.valueChanged.connect(self.on_fuzzing_end_changed)
        self.ui.comboBoxFuzzingLabel.currentIndexChanged.connect(self.on_combo_box_fuzzing_label_current_index_changed)
        self.ui.btnRepeatValues.clicked.connect(self.on_btn_repeat_values_clicked)
        self.ui.btnAddRow.clicked.connect(self.on_btn_add_row_clicked)
        self.ui.btnDelRow.clicked.connect(self.on_btn_del_row_clicked)
        self.ui.tblFuzzingValues.deletion_wanted.connect(self.delete_lines)
        self.ui.chkBRemoveDuplicates.stateChanged.connect(self.on_remove_duplicates_state_changed)
        self.ui.sBAddRangeStart.valueChanged.connect(self.on_fuzzing_range_start_changed)
        self.ui.sBAddRangeEnd.valueChanged.connect(self.on_fuzzing_range_end_changed)
        self.ui.checkBoxLowerBound.stateChanged.connect(self.on_lower_bound_checked_changed)
        self.ui.checkBoxUpperBound.stateChanged.connect(self.on_upper_bound_checked_changed)
        self.ui.spinBoxLowerBound.valueChanged.connect(self.on_lower_bound_changed)
        self.ui.spinBoxUpperBound.valueChanged.connect(self.on_upper_bound_changed)
        self.ui.spinBoxRandomMinimum.valueChanged.connect(self.on_random_range_min_changed)
        self.ui.spinBoxRandomMaximum.valueChanged.connect(self.on_random_range_max_changed)
        self.ui.spinBoxFuzzMessage.valueChanged.connect(self.on_fuzz_msg_changed)
        self.ui.btnAddFuzzingValues.clicked.connect(self.on_btn_add_fuzzing_values_clicked)
        self.ui.comboBoxFuzzingLabel.editTextChanged.connect(self.set_current_label_name)